Thank you Easter Bunny. Found a dealer that was willing to spend the time.
I doubt this will help many people, unless they have the same computer part number but:
2008 MS3 GT
OEM ECM PART NUMBER
LKZ8-18-881
COMPATIBLE VARIATIONS:
L34C-18-881G
L39S-18-881
L39S-18-881A
L39S-18-881C
L39S-18-881D...
Tried to search first but to no avail. Looong story short, my 2008 speed3 is at the dealer and just had it's 2 wiring harnesses replaced. There is now a code (still awaiting further info from the dealership) that they are blaming on a mystery wire coming out of the ecu (an old post in the...