I have just replaced my head, put in Farrea valve train, HKS 264 cams, new exhaust, new 02 sensor, new temp sensors, etc.... It seems that my car was running rich to begin with (before these mods). But now it runs really rich, IE my O2 meter is pegged at rich, the car smokes due to cylinder wash down. The car runs great. I have no power loss and compression checks are good. I think I am just getting to much fuel. I have a HKS Super AFR installed but it has been bypassed due to the fact the car won't start with it hooked up unless it is warmed up. Any help will be greatly appreciated.. Thanks in advance!!!