This is way out of my league:

I purchased a 2005 S54 SMG Engine for an engine swap. I had the following done to the DME (MSS54HP): SMG to Manual, EWS Delete, SAP Delete, O2 post cat Delete, Cat Delete, Dyno Tune delete.

I installed the DME into my Manual 2002 E46 M3 (Uses MSS54) to try it out. The new DME is throwing Crankcase Ventilation codes and a CEL (Foxwell Scanner). I clear the code and the car stumbles a second, code comes back, and the car runs fine.

I re-install the original DME and it runs with no codes or CEL.

What did we miss? Did we exclude something when going fromSMG to Manual? Is the DME looking for a signal for a SMG function from the Crankcase?


Second question: The Sport function is almost like a turbo button on my 02 DME. On the 05 DME, it's just a mild boost. Found that interesting. Why?