ever since i bought the car ive noticed thats been running rich. what can cause this? i am not throwing a check engine light, and yes my check engine light does work. i have just replaced the headgasket, and redone the ENTIRE cooling system. and its still running rich after that.

possible fpr?

 

What Fuel Injectors are being used? Are you running the P06 ECU?

 

Mine had a p05 ecu.

 

If you need parts for that motor let me know.

 

thanks, but im just gonna drive it until the spring, then i'll put a b20 in it after i buy a f350 diesel to drive daily. oh and im gonna sell the b7. it only has 93k miles on it.