Those numbers seem okay. Have you swapped in the new ECU? I've been reading over this thread for a bit and I'm not sure what hasn't been suggested. One thing that bears repeating: make sure you have good grounds.
I'll kick this around in my head and pop back in with any "Oh crap! That could be it!" sorts of things. Electrical issues drive us all to the brink of madness. Hang in there.
