Pfc sensor check
#2
Urban Combat Vet
iTrader: (16)
Correct. If you still had the stock ECU you would have a CEL (for one of three possible codes) and the car would be in limp mode. However the PFC doesn't generate CELs or have a limp mode state. But while the PFC doesn't care, your engine does. You should be pre-mixing unless or until you replace the OMP.