{"title":"BMW M52TU\/M54\/M56 Tunes","description":"\u003cp\u003eBMW staged calibrations for supported M52TU, M54, and M56 applications using MS42, MS43, or MS45-family engine management.\u003c\/p\u003e\u003cp\u003eChoose the vehicle and ECU carefully. Naturally aspirated stages describe calibration level; factory-turbo map-pack stages must match the stated hardware and fuel requirements. One-off, revision-based work belongs with \u003ca href=\"https:\/\/undisputedracing.com\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eUNDSPTD. bespoke tuning\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"98-00-e46-z3-e39-323-328-z3-m52tu-n-a-custom-tune","title":"98–00 BMW E46\/Z3\/E39\/E38 MS42 N\/A Tune — Stage 1\/2\/3","description":"\u003cdiv style=\"border: 2px solid #6f4aa8; border-radius: 12px; padding: 16px; margin: 0 0 24px; background: #f7f1ff;\"\u003e\n\u003ch2 style=\"margin-top: 0;\"\u003eDIGITAL TUNE DELIVERY\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe tune itself is delivered by email. No physical tune is shipped, and no tracking number is expected.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYour calibration file and applicable flashing instructions are sent to the email address used at checkout.\u003c\/li\u003e\n\u003cli\u003eComplete the Tune Configurator for the car exactly as it will be when flashed, and review every selection before checkout.\u003c\/li\u003e\n\u003cli\u003eA full ECU read is not required unless Poverty Built requests one after reviewing the order.\u003c\/li\u003e\n\u003cli\u003eFlashing software, licenses, cables, and interfaces are separate unless this listing or your order specifically says they are included.\u003c\/li\u003e\n\u003cli\u003eIf your order also includes a cable or other physical hardware, that item ships separately. A shipping label means the package is being prepared; it is not in transit until the carrier receives it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eConfigure the car first. Choose the stage second.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a platform-developed, naturally aspirated calibration configured for BMW M52TU-powered E46, E39, E38, and Z3 applications using Siemens MS42. \u003cstrong\u003eThe stage is not a parts list and does not tell you which modifications the car must have.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Tune Configurator selections on this page tell us the engine configuration and requested ECU behavior. Select them to match the car exactly as it will be when the tune is flashed. Once those selections are correct, choose the stage based on the level and driving character you want.\u003c\/p\u003e\n\n\u003ch2\u003eHOW TO ORDER\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the ECU.\u003c\/strong\u003e The chassis and model year are not enough by themselves. Your ECU identification\/read must show MS42.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete every Tune Configurator selection accurately.\u003c\/strong\u003e Select the installed engine size and the requested EWS, SAP, DISA, rev-limiter, idle-speed, O2-sensor, burble\/pops, and cable choices. These selections are instructions used to configure the order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose the stage.\u003c\/strong\u003e The stage determines the level and character of the calibration—not which parts you are required to install.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eExample:\u003c\/strong\u003e Headers, an intake, a manifold, or cams do not automatically make the car “Stage 2” or “Stage 3.” A car with common bolt-ons may still choose Stage 1, while a mostly stock car may choose Stage 3. Supporting modifications can improve the result, but they are recommendations—not stage requirements.\u003c\/p\u003e\n\u003cp\u003eIf the exact engine or requested configuration is not represented in the Tune Configurator, contact us before ordering instead of selecting the closest answer.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT EACH STAGE MEANS\u003c\/h2\u003e\n\n\u003ch3\u003eSTAGE 1 — OEM+ | $180\u003c\/h3\u003e\n\u003cp\u003eThe cleanest and simplest performance calibration. Stage 1 focuses on improved throttle response, optimized fueling, ignition and dual-VANOS behavior, and smooth factory-like drivability. Best for someone who wants the car to feel sharper without an aggressive personality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHardware reminder:\u003c\/strong\u003e Stage 1 does not mean “stock parts only.” Your Tune Configurator selections still tell us how the car should be configured.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 2 — PERFORMANCE | $220\u003c\/h3\u003e\n\u003cp\u003eA more assertive naturally aspirated calibration with additional performance optimization and stronger response than Stage 1. The file is configured around the engine and ECU behavior selected in the Tune Configurator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeaders and an intake are not required to purchase Stage 2.\u003c\/strong\u003e They are common supporting upgrades, not the definition of the stage.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 3 — MAXIMUM N\/A | $280\u003c\/h3\u003e\n\u003cp\u003eOur most comprehensive and aggressive naturally aspirated calibration for this platform. Stage 3 provides the highest available level of performance and behavior within Poverty Built’s staged calibration structure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCams, headers, manifolds, or other major upgrades are not automatically required.\u003c\/strong\u003e Select the engine and ECU options that match the actual car.\u003c\/p\u003e\n\n\u003ch2\u003eFITMENT\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1998–2000 BMW E46 323i \/ 323Ci \/ 328i \/ 328Ci\u003c\/strong\u003e — M52TU, MS42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1998–2000 BMW E39 523i \/ 528i\u003c\/strong\u003e — M52TU, MS42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1998–2000 BMW E36\/7 Z3 2.3 \/ 2.8\u003c\/strong\u003e — M52TU, MS42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1998–2000 BMW E38 728i\u003c\/strong\u003e — M52TU, MS42\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSupported engine-swap choices shown in the Tune Configurator may also be used when they accurately describe a completed MS42-controlled vehicle. Contact us before ordering an unusual combination.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT IS CALIBRATED\u003c\/h2\u003e\n\u003cp\u003eDepending on the stage and Tune Configurator selections, the calibration may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrive-by-wire throttle response\u003c\/li\u003e\n\u003cli\u003ePart-load and full-load fueling\u003c\/li\u003e\n\u003cli\u003eIgnition timing\u003c\/li\u003e\n\u003cli\u003eDual-VANOS intake and exhaust cam behavior across RPM and load\u003c\/li\u003e\n\u003cli\u003eMS42 air\/load modeling and DISA-aware torque behavior\u003c\/li\u003e\n\u003cli\u003eIdle-speed and rev-limiter preferences selected in the Tune Configurator\u003c\/li\u003e\n\u003cli\u003eOptional top-speed limiter changes where supported\u003c\/li\u003e\n\u003cli\u003eOptional EWS and supported closed-course\/off-road SAP, O2, and diagnostic configurations when selected\u003c\/li\u003e\n\u003cli\u003eBurble\/pops behavior when selected and supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTHE TUNE CONFIGURATOR IS PART OF THE ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine size:\u003c\/strong\u003e Select the engine actually installed. Use a swap choice only when it accurately describes the completed car.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEWS, SAP, DISA and O2 setup:\u003c\/strong\u003e Select what the car will use when flashed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRev limiter, idle and burbles:\u003c\/strong\u003e Select the behavior you want; do not assume the stage chooses these automatically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlash cable:\u003c\/strong\u003e This is an optional hardware add-on and does not change the stage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe build the order from the submitted selections. Incorrect choices can produce an incorrect file, so review the entire form before checkout.\u003c\/p\u003e\n\n\u003ch2\u003eBEFORE YOU ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe vehicle must be mechanically healthy before tuning. A calibration will not repair vacuum leaks, failing sensors, weak fuel delivery, ignition problems, VANOS\/DISA faults, overheating, low compression, or other mechanical issues.\u003c\/li\u003e\n\u003cli\u003eChoose options for the car exactly as it will be driven with this tune.\u003c\/li\u003e\n\u003cli\u003eChanges made after the file is delivered may require purchasing an updated calibration.\u003c\/li\u003e\n\u003cli\u003ePower gains vary with engine condition, fuel quality, altitude, weather, and installed hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWHAT YOU RECEIVE\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA Poverty Built platform-developed calibration configured around the Tune Configurator selections submitted with the order\u003c\/li\u003e\n\u003cli\u003eFlashing guidance for the supported MS42 process\u003c\/li\u003e\n\u003cli\u003eCorrection of a verified tune-related issue if the delivered file does not match the submitted order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThis product uses a proven calibration framework for supported combinations.\u003c\/strong\u003e It does not include one-off calibration development, repeated datalog review, ongoing revisions, or changes for later hardware updates. Builds that need an individualized process should use \u003ca href=\"https:\/\/undisputedracing.com\/\"\u003eUNDSPTD. bespoke tuning\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFLASHING REQUIREMENTS\u003c\/h2\u003e\n\u003cp\u003eThis MS42 file can be flashed with the \u003ca href=\"https:\/\/www.ms4x.net\/index.php?title=MS4x_Flasher\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eMS4X Flasher\u003c\/strong\u003e\u003c\/a\u003e. The official MS4X Flasher documentation lists MS42 and MS43 support. The flashing software and compatible cable are separate from the tune.\u003c\/p\u003e\u003cp\u003eIf Poverty Built needs a file read or additional ECU identification for your specific order, we will request it. \u003cstrong\u003eYou do not need to submit a full read unless asked.\u003c\/strong\u003e The customer is responsible for selecting the correct ECU, maintaining stable battery voltage, and using a reliable connection.\u003c\/p\u003e\n\n\u003ch2\u003eCLOSED-COURSE \/ OFF-ROAD USE\u003c\/h2\u003e\n\u003cp\u003eAny option that changes the operation or reporting of emissions-related equipment is intended only for lawful closed-course competition or off-road use. You are responsible for knowing and following all laws that apply to your vehicle and location.\u003c\/p\u003e\n\n\u003ch2\u003ePOVERTY BUILT DISCLAIMER\u003c\/h2\u003e\n\u003cp\u003eBy purchasing this product, you acknowledge that ECU tuning carries risk and that Poverty Built LLC is not liable for engine failure, drivetrain damage, flashing interruption, emissions violations, losses caused by incorrect customer selections, or indirect, incidental, or consequential damages. Results depend on vehicle condition, modifications, fuel, installation quality, and the accuracy of the information submitted with the order. The vehicle must be mechanically sound and properly maintained before and after tuning. Your purchase is also subject to the posted refund and service policies.\u003c\/p\u003e\n\u003ch2\u003eHelpful guides\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/bmw-ms42-vs-ms43-vs-ms45-how-to-identify-your-ecu\"\u003eIdentify MS42, MS43, or MS45\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/how-to-flash-bmw-ms42-ms43-and-what-ms45-owners-need-to-know\"\u003eFollow the MS42\/MS43 flashing guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/e46-unleashing-flames-a-guide-to-producing-exhaust-flames-on-your-e46\"\u003eUnderstand E46 burble and flame options\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Poverty Built","offers":[{"title":"Default Title","offer_id":49280516391200,"sku":"","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/3512\/8608\/files\/ms42.webp?v=1727476523"},{"product_id":"00-05-e46-z3-e39-e83-e85-m54-custom-n-a-tune","title":"00–05 BMW E46\/E39\/Z3\/X5 M54 MS43 N\/A Tune — Stage 1\/2\/3","description":"\u003cdiv style=\"border: 2px solid #6f4aa8; border-radius: 12px; padding: 16px; margin: 0 0 24px; background: #f7f1ff;\"\u003e\n\u003ch2 style=\"margin-top: 0;\"\u003eDIGITAL TUNE DELIVERY\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe tune itself is delivered by email. No physical tune is shipped, and no tracking number is expected.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYour calibration file and applicable flashing instructions are sent to the email address used at checkout.\u003c\/li\u003e\n\u003cli\u003eComplete the Tune Configurator for the car exactly as it will be when flashed, and review every selection before checkout.\u003c\/li\u003e\n\u003cli\u003eA full ECU read is not required unless Poverty Built requests one after reviewing the order.\u003c\/li\u003e\n\u003cli\u003eFlashing software, licenses, cables, and interfaces are separate unless this listing or your order specifically says they are included.\u003c\/li\u003e\n\u003cli\u003eIf your order also includes a cable or other physical hardware, that item ships separately. A shipping label means the package is being prepared; it is not in transit until the carrier receives it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eConfigure the car first. Choose the stage second.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a platform-developed, naturally aspirated calibration configured for BMW M54-powered E46, E39, Z3, and E53 X5 applications using Siemens MS43. \u003cstrong\u003eThe stage is not a parts list and does not tell you which modifications the car must have.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Tune Configurator selections on this page tell us the engine configuration and requested ECU behavior. Select them to match the car exactly as it will be when the tune is flashed. Once those selections are correct, choose the stage based on the level and driving character you want.\u003c\/p\u003e\n\n\u003ch2\u003eHOW TO ORDER\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the ECU.\u003c\/strong\u003e The chassis and model year are not enough by themselves. Your ECU identification\/read must show MS43.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete every Tune Configurator selection accurately.\u003c\/strong\u003e Select the installed engine size and the requested EWS, SAP, DISA, rev-limiter, idle-speed, O2-sensor, burble\/pops, and cable choices. These selections are instructions used to configure the order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose the stage.\u003c\/strong\u003e The stage determines the level and character of the calibration—not which parts you are required to install.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eExample:\u003c\/strong\u003e Headers, an intake, a manifold, or cams do not automatically make the car “Stage 2” or “Stage 3.” A car with common bolt-ons may still choose Stage 1, while a mostly stock car may choose Stage 3. Supporting modifications can improve the result, but they are recommendations—not stage requirements.\u003c\/p\u003e\n\u003cp\u003eIf the exact engine or requested configuration is not represented in the Tune Configurator, contact us before ordering instead of selecting the closest answer.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT EACH STAGE MEANS\u003c\/h2\u003e\n\n\u003ch3\u003eSTAGE 1 — OEM+ | $180\u003c\/h3\u003e\n\u003cp\u003eThe cleanest and simplest performance calibration. Stage 1 focuses on improved throttle response, optimized fueling, ignition and dual-VANOS behavior, and smooth factory-like drivability. Best for someone who wants the car to feel sharper without an aggressive personality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHardware reminder:\u003c\/strong\u003e Stage 1 does not mean “stock parts only.” Your Tune Configurator selections still tell us how the car should be configured.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 2 — PERFORMANCE | $220\u003c\/h3\u003e\n\u003cp\u003eA more assertive naturally aspirated calibration with additional performance optimization and stronger response than Stage 1. The file is configured around the engine and ECU behavior selected in the Tune Configurator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeaders and an intake are not required to purchase Stage 2.\u003c\/strong\u003e They are common supporting upgrades, not the definition of the stage.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 3 — MAXIMUM N\/A | $280\u003c\/h3\u003e\n\u003cp\u003eOur most comprehensive and aggressive naturally aspirated calibration for this platform. Stage 3 provides the highest available level of performance and behavior within Poverty Built’s staged calibration structure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCams, headers, manifolds, or other major upgrades are not automatically required.\u003c\/strong\u003e Select the engine and ECU options that match the actual car.\u003c\/p\u003e\n\n\u003ch2\u003eFITMENT\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2000–2005 BMW E46 325i \/ 325xi \/ 325Ci \/ 325ti\u003c\/strong\u003e — M54, MS43-equipped vehicles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2000–2005 BMW E46 330i \/ 330xi \/ 330Ci\u003c\/strong\u003e — M54, MS43-equipped vehicles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2000–2003 BMW E39 525i \/ 530i\u003c\/strong\u003e — M54, MS43\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2000–2002 BMW E36\/7 Z3 2.5i \/ 3.0i\u003c\/strong\u003e — M54, MS43\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2000–2003 BMW E53 X5 3.0i\u003c\/strong\u003e — M54, MS43\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e E83 X3, E85 Z4, and E60 M54 applications normally use the MS45 family and should use the appropriate MS45 listing unless the vehicle has been converted to MS43. Always identify the ECU from the read before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT IS CALIBRATED\u003c\/h2\u003e\n\u003cp\u003eDepending on the stage and Tune Configurator selections, the calibration may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrive-by-wire throttle response\u003c\/li\u003e\n\u003cli\u003ePart-load and full-load fueling\u003c\/li\u003e\n\u003cli\u003eIgnition timing\u003c\/li\u003e\n\u003cli\u003eDual-VANOS intake and exhaust cam behavior across RPM and load\u003c\/li\u003e\n\u003cli\u003eMS43 air\/load modeling and DISA-aware torque behavior\u003c\/li\u003e\n\u003cli\u003eIdle-speed and rev-limiter preferences selected in the Tune Configurator\u003c\/li\u003e\n\u003cli\u003eOptional top-speed limiter changes where supported\u003c\/li\u003e\n\u003cli\u003eOptional EWS and supported closed-course\/off-road SAP, O2, and diagnostic configurations when selected\u003c\/li\u003e\n\u003cli\u003eBurble\/pops behavior when selected and supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTHE TUNE CONFIGURATOR IS PART OF THE ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine size:\u003c\/strong\u003e Select the engine actually installed. Use a swap choice only when it accurately describes the completed car.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEWS, SAP, DISA and O2 setup:\u003c\/strong\u003e Select what the car will use when flashed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRev limiter, idle and burbles:\u003c\/strong\u003e Select the behavior you want; do not assume the stage chooses these automatically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlash cable:\u003c\/strong\u003e This is an optional hardware add-on and does not change the stage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe build the order from the submitted selections. Incorrect choices can produce an incorrect file, so review the entire form before checkout.\u003c\/p\u003e\n\n\u003ch2\u003eBEFORE YOU ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe vehicle must be mechanically healthy before tuning. A calibration will not repair vacuum leaks, failing sensors, weak fuel delivery, ignition problems, VANOS\/DISA faults, overheating, low compression, or other mechanical issues.\u003c\/li\u003e\n\u003cli\u003eChoose options for the car exactly as it will be driven with this tune.\u003c\/li\u003e\n\u003cli\u003eChanges made after the file is delivered may require purchasing an updated calibration.\u003c\/li\u003e\n\u003cli\u003ePower gains vary with engine condition, fuel quality, altitude, weather, and installed hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWHAT YOU RECEIVE\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA Poverty Built platform-developed calibration configured around the Tune Configurator selections submitted with the order\u003c\/li\u003e\n\u003cli\u003eFlashing guidance for the supported MS43 process\u003c\/li\u003e\n\u003cli\u003eCorrection of a verified tune-related issue if the delivered file does not match the submitted order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThis product uses a proven calibration framework for supported combinations.\u003c\/strong\u003e It does not include one-off calibration development, repeated datalog review, ongoing revisions, or changes for later hardware updates. Builds that need an individualized process should use \u003ca href=\"https:\/\/undisputedracing.com\/\"\u003eUNDSPTD. bespoke tuning\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFLASHING REQUIREMENTS\u003c\/h2\u003e\n\u003cp\u003eThis MS43 file can be flashed with the \u003ca href=\"https:\/\/www.ms4x.net\/index.php?title=MS4x_Flasher\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eMS4X Flasher\u003c\/strong\u003e\u003c\/a\u003e. The official MS4X Flasher documentation lists MS42 and MS43 support. The flashing software and compatible cable are separate from the tune.\u003c\/p\u003e\u003cp\u003eIf Poverty Built needs a file read or additional ECU identification for your specific order, we will request it. \u003cstrong\u003eYou do not need to submit a full read unless asked.\u003c\/strong\u003e The customer is responsible for selecting the correct ECU, maintaining stable battery voltage, and using a reliable connection.\u003c\/p\u003e\n\n\u003ch2\u003eCLOSED-COURSE \/ OFF-ROAD USE\u003c\/h2\u003e\n\u003cp\u003eAny option that changes the operation or reporting of emissions-related equipment is intended only for lawful closed-course competition or off-road use. You are responsible for knowing and following all laws that apply to your vehicle and location.\u003c\/p\u003e\n\n\u003ch2\u003ePOVERTY BUILT DISCLAIMER\u003c\/h2\u003e\n\u003cp\u003eBy purchasing this product, you acknowledge that ECU tuning carries risk and that Poverty Built LLC is not liable for engine failure, drivetrain damage, flashing interruption, emissions violations, losses caused by incorrect customer selections, or indirect, incidental, or consequential damages. Results depend on vehicle condition, modifications, fuel, installation quality, and the accuracy of the information submitted with the order. The vehicle must be mechanically sound and properly maintained before and after tuning. Your purchase is also subject to the posted refund and service policies.\u003c\/p\u003e\n\u003ch2\u003eHelpful guides\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/bmw-ms42-vs-ms43-vs-ms45-how-to-identify-your-ecu\"\u003eIdentify MS42, MS43, or MS45\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/how-to-flash-bmw-ms42-ms43-and-what-ms45-owners-need-to-know\"\u003eFollow the MS42\/MS43 flashing guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/e46-unleashing-flames-a-guide-to-producing-exhaust-flames-on-your-e46\"\u003eUnderstand E46 burble and flame options\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Poverty Built","offers":[{"title":"Default Title","offer_id":49280516456736,"sku":"","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/3512\/8608\/files\/ms43.webp?v=1727475611"},{"product_id":"02-2003-2006-325i-330i-e46-incl-zhp-ms45-custom-tune","title":"03–06 BMW E46 325i\/330i MS45.1 N\/A Tune — Stage 1\/2\/3","description":"\u003cdiv style=\"border: 2px solid #6f4aa8; border-radius: 12px; padding: 16px; margin: 0 0 24px; background: #f7f1ff;\"\u003e\n\u003ch2 style=\"margin-top: 0;\"\u003eDIGITAL TUNE DELIVERY\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe tune itself is delivered by email. No physical tune is shipped, and no tracking number is expected.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYour calibration file and applicable flashing instructions are sent to the email address used at checkout.\u003c\/li\u003e\n\u003cli\u003eComplete the Tune Configurator for the car exactly as it will be when flashed, and review every selection before checkout.\u003c\/li\u003e\n\u003cli\u003eA full ECU read is not required unless Poverty Built requests one after reviewing the order.\u003c\/li\u003e\n\u003cli\u003eFlashing software, licenses, cables, and interfaces are separate unless this listing or your order specifically says they are included.\u003c\/li\u003e\n\u003cli\u003eIf your order also includes a cable or other physical hardware, that item ships separately. A shipping label means the package is being prepared; it is not in transit until the carrier receives it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eConfigure the car first. Choose the stage second.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a platform-developed, naturally aspirated calibration configured for 2003–2006 BMW E46 325i and 330i models—including ZHP—using the M54 and Siemens MS45.1. \u003cstrong\u003eThe stage is not a parts list and does not tell you which modifications the car must have.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Tune Configurator selections on this page tell us the engine configuration and requested ECU behavior. Select them to match the car exactly as it will be when the tune is flashed. Once those selections are correct, choose the stage based on the level and driving character you want.\u003c\/p\u003e\n\n\u003ch2\u003eHOW TO ORDER\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the ECU.\u003c\/strong\u003e The chassis and model year are not enough by themselves. Your ECU identification\/read must show MS45.1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete every Tune Configurator selection accurately.\u003c\/strong\u003e Select the installed engine size and the requested EWS, SAP, DISA, rev-limiter, idle-speed, O2-sensor, burble\/pops, and cable choices. These selections are instructions used to configure the order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose the stage.\u003c\/strong\u003e The stage determines the level and character of the calibration—not which parts you are required to install.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eExample:\u003c\/strong\u003e Headers, an intake, a manifold, or cams do not automatically make the car “Stage 2” or “Stage 3.” A car with common bolt-ons may still choose Stage 1, while a mostly stock car may choose Stage 3. Supporting modifications can improve the result, but they are recommendations—not stage requirements.\u003c\/p\u003e\n\u003cp\u003eIf the exact engine or requested configuration is not represented in the Tune Configurator, contact us before ordering instead of selecting the closest answer.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT EACH STAGE MEANS\u003c\/h2\u003e\n\n\u003ch3\u003eSTAGE 1 — OEM+ | $180\u003c\/h3\u003e\n\u003cp\u003eThe cleanest and simplest performance calibration. Stage 1 focuses on improved throttle response, optimized fueling, ignition and dual-VANOS behavior, and smooth factory-like drivability. Best for someone who wants the car to feel sharper without an aggressive personality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHardware reminder:\u003c\/strong\u003e Stage 1 does not mean “stock parts only.” Your Tune Configurator selections still tell us how the car should be configured.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 2 — PERFORMANCE | $220\u003c\/h3\u003e\n\u003cp\u003eA more assertive naturally aspirated calibration with additional performance optimization and stronger response than Stage 1. The file is configured around the engine and ECU behavior selected in the Tune Configurator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeaders and an intake are not required to purchase Stage 2.\u003c\/strong\u003e They are common supporting upgrades, not the definition of the stage.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 3 — MAXIMUM N\/A | $280\u003c\/h3\u003e\n\u003cp\u003eOur most comprehensive and aggressive naturally aspirated calibration for this platform. Stage 3 provides the highest available level of performance and behavior within Poverty Built’s staged calibration structure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCams, headers, manifolds, or other major upgrades are not automatically required.\u003c\/strong\u003e Select the engine and ECU options that match the actual car.\u003c\/p\u003e\n\n\u003ch2\u003eFITMENT\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2003–2006 BMW E46 325i \/ 325xi \/ 325Ci \/ 325Cic\u003c\/strong\u003e — M54, MS45.1-equipped vehicles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2003–2006 BMW E46 330i \/ 330xi \/ 330Ci \/ 330Cic\u003c\/strong\u003e — M54, MS45.1-equipped vehicles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW E46 330i ZHP\u003c\/strong\u003e — M54B30, MS45.1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis listing is for E46 vehicles identified as MS45.1. An MS43-equipped E46 must use the MS43 listing. Production year alone is not a reliable substitute for reading the ECU identification.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT IS CALIBRATED\u003c\/h2\u003e\n\u003cp\u003eDepending on the stage and Tune Configurator selections, the calibration may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrive-by-wire throttle response\u003c\/li\u003e\n\u003cli\u003ePart-load and full-load fueling\u003c\/li\u003e\n\u003cli\u003eIgnition timing\u003c\/li\u003e\n\u003cli\u003eDual-VANOS intake and exhaust cam behavior across RPM and load\u003c\/li\u003e\n\u003cli\u003eMS45.1 air\/load, torque, DISA, and electronic-throttle behavior\u003c\/li\u003e\n\u003cli\u003eIdle-speed and rev-limiter preferences selected in the Tune Configurator\u003c\/li\u003e\n\u003cli\u003eOptional top-speed limiter changes where supported\u003c\/li\u003e\n\u003cli\u003eOptional EWS and supported closed-course\/off-road SAP, O2, and diagnostic configurations when selected\u003c\/li\u003e\n\u003cli\u003eBurble\/pops behavior when selected and supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTHE TUNE CONFIGURATOR IS PART OF THE ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine size:\u003c\/strong\u003e Select the engine actually installed. Use a swap choice only when it accurately describes the completed car.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEWS, SAP, DISA and O2 setup:\u003c\/strong\u003e Select what the car will use when flashed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRev limiter, idle and burbles:\u003c\/strong\u003e Select the behavior you want; do not assume the stage chooses these automatically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlash cable:\u003c\/strong\u003e This is an optional hardware add-on and does not change the stage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe build the order from the submitted selections. Incorrect choices can produce an incorrect file, so review the entire form before checkout.\u003c\/p\u003e\n\n\u003ch2\u003eBEFORE YOU ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe vehicle must be mechanically healthy before tuning. A calibration will not repair vacuum leaks, failing sensors, weak fuel delivery, ignition problems, VANOS\/DISA faults, overheating, low compression, or other mechanical issues.\u003c\/li\u003e\n\u003cli\u003eChoose options for the car exactly as it will be driven with this tune.\u003c\/li\u003e\n\u003cli\u003eChanges made after the file is delivered may require purchasing an updated calibration.\u003c\/li\u003e\n\u003cli\u003ePower gains vary with engine condition, fuel quality, altitude, weather, and installed hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWHAT YOU RECEIVE\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA Poverty Built platform-developed calibration configured around the Tune Configurator selections submitted with the order\u003c\/li\u003e\n\u003cli\u003eFlashing guidance for the supported MS45.1 process\u003c\/li\u003e\n\u003cli\u003eCorrection of a verified tune-related issue if the delivered file does not match the submitted order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThis product uses a proven calibration framework for supported combinations.\u003c\/strong\u003e It does not include one-off calibration development, repeated datalog review, ongoing revisions, or changes for later hardware updates. Builds that need an individualized process should use \u003ca href=\"https:\/\/undisputedracing.com\/\"\u003eUNDSPTD. bespoke tuning\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFLASHING REQUIREMENTS\u003c\/h2\u003e\n\u003cp\u003eMS45.1 requires an MS45-capable flashing workflow. Use \u003ca href=\"https:\/\/www.bimmertuningtools.com\/product\/ms45-quickflash\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eBimmer Tuning Tools MS45 QuickFlash\u003c\/strong\u003e\u003c\/a\u003e or the \u003ca href=\"https:\/\/github.com\/terraphantm\/MS45-Flasher\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003ededicated MS45 Flasher\u003c\/strong\u003e\u003c\/a\u003e when it matches the delivered file and instructions. \u003cstrong\u003eThe official MS4X Flasher does not list MS45 support.\u003c\/strong\u003e Flashing software and compatible hardware are separate from the tune.\u003c\/p\u003e\u003cp\u003eIf Poverty Built needs a file read or additional ECU identification for your specific order, we will request it. \u003cstrong\u003eYou do not need to submit a full read unless asked.\u003c\/strong\u003e The customer is responsible for selecting the correct ECU, maintaining stable battery voltage, and using a reliable connection.\u003c\/p\u003e\n\n\u003ch2\u003eCLOSED-COURSE \/ OFF-ROAD USE\u003c\/h2\u003e\n\u003cp\u003eAny option that changes the operation or reporting of emissions-related equipment is intended only for lawful closed-course competition or off-road use. You are responsible for knowing and following all laws that apply to your vehicle and location.\u003c\/p\u003e\n\n\u003ch2\u003ePOVERTY BUILT DISCLAIMER\u003c\/h2\u003e\n\u003cp\u003eBy purchasing this product, you acknowledge that ECU tuning carries risk and that Poverty Built LLC is not liable for engine failure, drivetrain damage, flashing interruption, emissions violations, losses caused by incorrect customer selections, or indirect, incidental, or consequential damages. Results depend on vehicle condition, modifications, fuel, installation quality, and the accuracy of the information submitted with the order. The vehicle must be mechanically sound and properly maintained before and after tuning. Your purchase is also subject to the posted refund and service policies.\u003c\/p\u003e\n\u003ch2\u003eHelpful guides\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/bmw-ms42-vs-ms43-vs-ms45-how-to-identify-your-ecu\"\u003eConfirm whether the car uses MS45\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/how-to-flash-bmw-ms42-ms43-and-what-ms45-owners-need-to-know\"\u003eRead what MS45 owners need to know about flashing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/how-tos-for-tuning-bmws\/e46-unleashing-flames-a-guide-to-producing-exhaust-flames-on-your-e46\"\u003eUnderstand E46 burble and flame options\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Poverty Built","offers":[{"title":"Default Title","offer_id":49280516522272,"sku":"","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/3512\/8608\/files\/ms45.webp?v=1727475838"},{"product_id":"03-06-z4-e83-e85-e60-m54-ms45-0-custom-n-a-tune-s1-s2-s3","title":"03–06 BMW Z4\/X3\/E60 M54 MS45 N\/A Tune — Stage 1\/2\/3","description":"\u003cdiv style=\"border: 2px solid #6f4aa8; border-radius: 12px; padding: 16px; margin: 0 0 24px; background: #f7f1ff;\"\u003e\n\u003ch2 style=\"margin-top: 0;\"\u003eDIGITAL TUNE DELIVERY\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThe tune itself is delivered by email. No physical tune is shipped, and no tracking number is expected.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYour calibration file and applicable flashing instructions are sent to the email address used at checkout.\u003c\/li\u003e\n\u003cli\u003eComplete the Tune Configurator for the car exactly as it will be when flashed, and review every selection before checkout.\u003c\/li\u003e\n\u003cli\u003eA full ECU read is not required unless Poverty Built requests one after reviewing the order.\u003c\/li\u003e\n\u003cli\u003eFlashing software, licenses, cables, and interfaces are separate unless this listing or your order specifically says they are included.\u003c\/li\u003e\n\u003cli\u003eIf your order also includes a cable or other physical hardware, that item ships separately. A shipping label means the package is being prepared; it is not in transit until the carrier receives it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eConfigure the car first. Choose the stage second.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is a platform-developed, naturally aspirated calibration configured for supported M54-powered BMW Z4, X3, and E60 applications using the Siemens MS45 family. \u003cstrong\u003eThe stage is not a parts list and does not tell you which modifications the car must have.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Tune Configurator selections on this page tell us the engine configuration and requested ECU behavior. Select them to match the car exactly as it will be when the tune is flashed. Once those selections are correct, choose the stage based on the level and driving character you want.\u003c\/p\u003e\n\n\u003ch2\u003eHOW TO ORDER\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the ECU.\u003c\/strong\u003e The chassis and model year are not enough by themselves. Your ECU identification\/read must show the supported MS45.0 or MS45.1 variant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete every Tune Configurator selection accurately.\u003c\/strong\u003e Select the installed engine size and the requested EWS, SAP, DISA, rev-limiter, idle-speed, O2-sensor, burble\/pops, and cable choices. These selections are instructions used to configure the order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose the stage.\u003c\/strong\u003e The stage determines the level and character of the calibration—not which parts you are required to install.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eExample:\u003c\/strong\u003e Headers, an intake, a manifold, or cams do not automatically make the car “Stage 2” or “Stage 3.” A car with common bolt-ons may still choose Stage 1, while a mostly stock car may choose Stage 3. Supporting modifications can improve the result, but they are recommendations—not stage requirements.\u003c\/p\u003e\n\u003cp\u003eIf the exact engine or requested configuration is not represented in the Tune Configurator, contact us before ordering instead of selecting the closest answer.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT EACH STAGE MEANS\u003c\/h2\u003e\n\n\u003ch3\u003eSTAGE 1 — OEM+ | $180\u003c\/h3\u003e\n\u003cp\u003eThe cleanest and simplest performance calibration. Stage 1 focuses on improved throttle response, optimized fueling, ignition and dual-VANOS behavior, and smooth factory-like drivability. Best for someone who wants the car to feel sharper without an aggressive personality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHardware reminder:\u003c\/strong\u003e Stage 1 does not mean “stock parts only.” Your Tune Configurator selections still tell us how the car should be configured.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 2 — PERFORMANCE | $220\u003c\/h3\u003e\n\u003cp\u003eA more assertive naturally aspirated calibration with additional performance optimization and stronger response than Stage 1. The file is configured around the engine and ECU behavior selected in the Tune Configurator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeaders and an intake are not required to purchase Stage 2.\u003c\/strong\u003e They are common supporting upgrades, not the definition of the stage.\u003c\/p\u003e\n\n\u003ch3\u003eSTAGE 3 — MAXIMUM N\/A | $280\u003c\/h3\u003e\n\u003cp\u003eOur most comprehensive and aggressive naturally aspirated calibration for this platform. Stage 3 provides the highest available level of performance and behavior within Poverty Built’s staged calibration structure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCams, headers, manifolds, or other major upgrades are not automatically required.\u003c\/strong\u003e Select the engine and ECU options that match the actual car.\u003c\/p\u003e\n\n\u003ch2\u003eFITMENT\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2003–2006 BMW E85 Z4 2.5i \/ 3.0i\u003c\/strong\u003e — M54, MS45\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2004–2006 BMW E83 X3 2.5i \/ 3.0i\u003c\/strong\u003e — M54, MS45\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2003–2005 BMW E60 525i \/ 530i\u003c\/strong\u003e — M54, MS45\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eExact MS45 variant must be confirmed from the ECU read.\u003c\/strong\u003e Similar M54 vehicles may use MS43, MS45.0, or MS45.1 depending on chassis, market, and configuration. This listing does not convert one ECU family into another.\u003c\/p\u003e\n\n\u003ch2\u003eWHAT IS CALIBRATED\u003c\/h2\u003e\n\u003cp\u003eDepending on the stage and Tune Configurator selections, the calibration may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrive-by-wire throttle response\u003c\/li\u003e\n\u003cli\u003ePart-load and full-load fueling\u003c\/li\u003e\n\u003cli\u003eIgnition timing\u003c\/li\u003e\n\u003cli\u003eDual-VANOS intake and exhaust cam behavior across RPM and load\u003c\/li\u003e\n\u003cli\u003eChassis-appropriate MS45 air\/load, torque, DISA, and electronic-throttle behavior\u003c\/li\u003e\n\u003cli\u003eIdle-speed and rev-limiter preferences selected in the Tune Configurator\u003c\/li\u003e\n\u003cli\u003eOptional top-speed limiter changes where supported\u003c\/li\u003e\n\u003cli\u003eOptional EWS and supported closed-course\/off-road SAP, O2, and diagnostic configurations when selected\u003c\/li\u003e\n\u003cli\u003eBurble\/pops behavior when selected and supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTHE TUNE CONFIGURATOR IS PART OF THE ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine size:\u003c\/strong\u003e Select the engine actually installed. Use a swap choice only when it accurately describes the completed car.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEWS, SAP, DISA and O2 setup:\u003c\/strong\u003e Select what the car will use when flashed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRev limiter, idle and burbles:\u003c\/strong\u003e Select the behavior you want; do not assume the stage chooses these automatically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlash cable:\u003c\/strong\u003e This is an optional hardware add-on and does not change the stage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe build the order from the submitted selections. Incorrect choices can produce an incorrect file, so review the entire form before checkout.\u003c\/p\u003e\n\n\u003ch2\u003eBEFORE YOU ORDER\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe vehicle must be mechanically healthy before tuning. A calibration will not repair vacuum leaks, failing sensors, weak fuel delivery, ignition problems, VANOS\/DISA faults, overheating, low compression, or other mechanical issues.\u003c\/li\u003e\n\u003cli\u003eChoose options for the car exactly as it will be driven with this tune.\u003c\/li\u003e\n\u003cli\u003eChanges made after the file is delivered may require purchasing an updated calibration.\u003c\/li\u003e\n\u003cli\u003ePower gains vary with engine condition, fuel quality, altitude, weather, and installed hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWHAT YOU RECEIVE\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA Poverty Built platform-developed calibration configured around the Tune Configurator selections submitted with the order\u003c\/li\u003e\n\u003cli\u003eFlashing guidance for the supported MS45.0\/MS45.1 process\u003c\/li\u003e\n\u003cli\u003eCorrection of a verified tune-related issue if the delivered file does not match the submitted order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThis product uses a proven calibration framework for supported combinations.\u003c\/strong\u003e It does not include one-off calibration development, repeated datalog review, ongoing revisions, or changes for later hardware updates. Builds that need an individualized process should use \u003ca href=\"https:\/\/undisputedracing.com\/\"\u003eUNDSPTD. bespoke tuning\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFLASHING REQUIREMENTS\u003c\/h2\u003e\n\u003cp\u003eMS45.0 requires an MS45-capable flashing workflow. Use \u003ca href=\"https:\/\/www.bimmertuningtools.com\/product\/ms45-quickflash\/\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eBimmer Tuning Tools MS45 QuickFlash\u003c\/strong\u003e\u003c\/a\u003e or the \u003ca href=\"https:\/\/github.com\/terraphantm\/MS45-Flasher\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003ededicated MS45 Flasher\u003c\/strong\u003e\u003c\/a\u003e when it matches the delivered file and instructions. \u003cstrong\u003eThe official MS4X Flasher does not list MS45 support.\u003c\/strong\u003e Flashing software and compatible hardware are separate from the tune.\u003c\/p\u003e\u003cp\u003eIf Poverty Built needs a file read or additional ECU identification for your specific order, we will request it. \u003cstrong\u003eYou do not need to submit a full read unless asked.\u003c\/strong\u003e The customer is responsible for selecting the correct ECU, maintaining stable battery voltage, and using a reliable connection.\u003c\/p\u003e\n\n\u003ch2\u003eCLOSED-COURSE \/ OFF-ROAD USE\u003c\/h2\u003e\n\u003cp\u003eAny option that changes the operation or reporting of emissions-related equipment is intended only for lawful closed-course competition or off-road use. You are responsible for knowing and following all laws that apply to your vehicle and location.\u003c\/p\u003e\n\n\u003ch2\u003ePOVERTY BUILT DISCLAIMER\u003c\/h2\u003e\n\u003cp\u003eBy purchasing this product, you acknowledge that ECU tuning carries risk and that Poverty Built LLC is not liable for engine failure, drivetrain damage, flashing interruption, emissions violations, losses caused by incorrect customer selections, or indirect, incidental, or consequential damages. Results depend on vehicle condition, modifications, fuel, installation quality, and the accuracy of the information submitted with the order. The vehicle must be mechanically sound and properly maintained before and after tuning. Your purchase is also subject to the posted refund and service policies.\u003c\/p\u003e","brand":"Poverty Built","offers":[{"title":"Default Title","offer_id":51380358054176,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/3512\/8608\/files\/ms45.webp?v=1727475838"}],"url":"https:\/\/povertybuilt.com\/collections\/bmw-m52tu-m54-m56-tunes.oembed","provider":"Poverty Built","version":"1.0","type":"link"}