I've seen bad crank sensors cause irratic spark timing and coil firing issues, but never on one bank only...

 

Yeah I thought about that myself, I would guess if the crank sensor went crazy it would involve both banks.

 

This thing is making me crazy. Just checked the coils again and they seem to be firing better at the moment. Still does not run that great stumbles and wants to die sometimes. Throws no codes.: bang: Shouldn't I be able to spin the tires pretty easy from a stop??? I know I have better traction with the detroit, but I seem to have less off idle power than the 5.3 did.