MS41 ECU

MS41 Engine Control Unit (ECU) – Reliable Engine Management for BMW M52 Engines

Bring classic BMW performance to life with the MS41 ECU, the original Bosch engine control unit designed for the M52 single-VANOS engine. Known for its reliability and tunability, the MS41 is a trusted platform for enthusiasts restoring or upgrading 90s-era BMWs.

🔧 Key Features:

OEM Bosch Quality – Factory-spec ECU ensures seamless integration and dependable performance.

Tuning-Capable Platform – Fully reprogrammable using tools like TunerPro and RomRaider; supports custom tuning for MAF delete, EWS delete, secondary air pump (SAP) removal, rev limiter adjustment, and fuel/ignition tuning.

EWS Security System – Equipped with immobilizer integration, with the option to disable for engine swaps or standalone builds.

⚙️ Compatible BMW Models (1996–1999):

E36 323i / 328i

E39 523i / 528i

Z3 2.8 (M52 Engine)

E38 728i (market dependent)

💡 Why Choose MS41?
The MS41 ECU offers the perfect blend of old-school simplicity and modern capability. Whether you're restoring a classic BMW, performing an M52 engine swap, or building a tuned street or drift car, the MS41 provides a solid foundation with broad community support and proven tuning reliability.