MS41 E36/E39/Z3 (M52) Tuning

BMW MS41 and MS41.2 OTS tuning for supported E36, E39, and Z3 applications using M52 or S52 engines. Confirm the actual engine and ECU before ordering, especially on swapped or converted cars. Configure the installed intake manifold, camshafts, headers, exhaust, injectors, fuel, transmission, and requested features first; then select the stage that best describes the intended calibration level and driving character.

Suggested modifications are recommendations, not a mandatory shopping list. Use the MS41 stage guide to compare Stage 1, 1+, 2, and 3. The naturally aspirated E36 build guide covers intake manifolds, header options, camshafts, injectors, compression, and matched build recipes. When ready to program the ECU, follow the MS41 flashing guide.

For a one-off build requiring revision-based calibration and datalog development, use UNDSPTD. bespoke tuning.