Originally Posted by ScotcH
Well, I assume you're stuffing this into your e30? If so, you need to get an OBDI harness and computer (which means Bosch 413 or 506). The Siemens is OBDII, so no good for you. The engine wiring harness is different, so you need that as well (and 325 or 95 M3 harness will do). You will also need the crank sensor, cam sensor, and knock sensors from OBDI engine.
Whats wrong with just dropping an OBD II swap in? I already have OBD II harness and sensors, only issue would be EWS...I got the M50 manifold anyways which from what I hear is the majority of the benefit from running OBD I. But I believe you answered my original question anyways
, If Im running OBDII, Siemens DME will work fine with the EWS disabled.
Now are the software tunes the same between Bosch and Siemens?