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HowTo: Convert M52TU Engine to MS43: Difference between revisions
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The M52TU engine from BMW is almost the same as its successor, the M54 engine. Except for the throttle body and pedal it shares all sensors with MS43 powered M54. | The M52TU engine from BMW is almost the same as its successor, the M54 engine. Except for the throttle body and pedal it shares all sensors with MS43 powered M54. | ||
It's not a complete plug & play operation to update the ECU from MS42 to MS43, but we try to make it as easy as possible with this guide. | |||
==== Wiring Modification ==== | ==== Wiring Modification ==== | ||
Revision as of 11:51, 15 May 2023
The M52TU engine from BMW is almost the same as its successor, the M54 engine. Except for the throttle body and pedal it shares all sensors with MS43 powered M54.
It's not a complete plug & play operation to update the ECU from MS42 to MS43, but we try to make it as easy as possible with this guide.
Wiring Modification
X6011 - Engine Signals - 8 way black connector
| M54 Engine | Cable Color | MS42 Vehicle | Function |
|---|---|---|---|
| X6011.1 | black | following | Starter Signal |
| X6011.2 | green/brown | following | Terminal 15 |
| X6011.3 | brown/grey | X60004.11 | Oil Pressure Switch |
| X6011.4 | blue | X60004.13 | Charge Control Light |
| X6011.5 | grey/blue | X60004.21 | Oil Level Sensor |
| X6011.6 | black/yellow | X60004.02 | Engine Start Signal |
X6053 - Voltage Supply 8 way white connector
M52TU cars dont have seperated +12V lines for ignition coils and injection valves, so you have to connect pin 7 (red/yellow) with pin 2 (red/white/yellow).
