I'm still testing like crazy and the only failure I've seen yet is a voltage failure between pin 12 and 28 on the LH module (I think, I'm not home right now to check myself on that). I'm trying to figure out an easy way to get to the N59 for more tests. So far I have every indication to tell me all easily accessed wiring is good. I have a feeling ill be tearing into the EA soon but evidence points to a voltage issue.

New observation. I go into limp mode just a few minutes after startup, seems like when the car is just starting to warm up but long before stable temps are reached. Has anyone experienced this?