The MS43 ECU was used by BMW in the E46, E36 Z3, E39 and E53 with the M54B22, M54B25 and the M54B30 engines. These engines are Twin Vanos and very similar to the later M52TU engines. But these use a fully electronic throttle and a more advanced ECU.
With these ECUs we are able to remove the EWS (immobiliser) making them completely plug and play, ideal for engine conversions, use of the engine in another chassis or just to take advantage of the tuning options we can offer below as a plug and play solution.
With these we can:
– Remove the EWS (immobiliser) (required to make the ecu plug and play. If not selected will required diagnostic tools to code to your car)
– Raise the rev limiter. Standard these are 6500rpm from factory. We have tested all 3 engines and they will happily rev to 7200rpm, assuming it is well serviced and maintained. We would not suggest raising above this.
– ABS / VSS Fault removal. When the abs has a fault with the NSR wheel the ECU does not see a speed signal to the engine ECU restricting it to 5500rpm. This is removed from the ECU when this is disabled.
– Modify the thermostat to open earlier
– Set After cat o2 sensors to learning (meaning they are disabled if disconnected)
– Disable the Secondary Air Pump (or SAP)
– Disable the Idle Control Valve (only available on the M54B30 or 3.0 engine)
– Tuning to allow for:
M54B30 Inlet Manifold
Decat
Sports Cat
Free flow exhaust system
What we can’t and wont offer on these ecus:
We do not support Forced Induction. Use of this product with forced induction is not supported.
We do not offer pops and bangs
We do not offer Launch Control
We do not offer flames or any other gimic which many then damage the engine.
If you want more details call our support team or email us. +44 (0)1244 710374 or email info@digital-tuning.co.uk