MS42 Tunes

MS42 controls many M52TU-powered BMW applications, including commonly supported E46 323i/328i, E39, and Z3 combinations. Verify the label and diagnostic identification before ordering because swaps and replacement modules are common.

For a naturally aspirated Poverty Built tune, select the engine and installed hardware accurately, then choose Stage 1, 2, or 3 for the calibration behavior you want. The parts do not automatically assign the stage.

Forced-induction cars must follow the exact service path shown on the product or MS42 forced-induction page. Unlisted airflow meters, injectors, fuel systems, or revision-based development are not interchangeable with a preset.

Shop the MS42 N/A tune · Review MS42 forced-induction tuning · Identify the DME