fair enough..
The Attessa ecu in the C34 is easier to get to than ours.. from memory.
Be prepared to pull off the whole inner wall in the boot to access it.
If you take the drivers side "compartment" out (just a couple of clips, it pulls right out) you can just barely see the Attessa comp sitting there. what i notices is that the plug is on the bottom side, and i think i could only see one of the bolts holding the ecu..
theres a couple of plugs directly below it under the car if you take the vented tray off, maybe check those wires too.