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HowTo: Convert M52TU Engine to MS43
From MS4X Wiki
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.
Wiring Modification
X6011 8-pin black - Cluster Signals
X6053 8-pin white - Voltage Supply
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).