MS43 Tunes

MS43 is used in many M54-powered BMW applications, including E46 325i/330i, E39, Z3, X5, and related chassis. Confirm the installed controller before ordering; model year alone is not enough.

For naturally aspirated Poverty Built tunes, the Tune Configurator describes the real engine, fuel, transmission, and hardware. Stage 1, 2, or 3 separately describes the calibration behavior the customer wants.

Forced-induction MS43 cars have two paths: an exact Poverty Built preset for listed MAF/injector combinations, or bespoke development for unlisted hardware and revision-based work.

Shop the MS43 N/A tune · Compare preset and bespoke MS43 tuning · MS43 vs MS45.1 guide