Hello. I'm a NECO member and I drive a 99 cougar with 40k on it so far. A CEL came up the other day. I ran autotap on it and it came up:
front bank lean
front bank lean
front bank lean
front bank lean
rear bank lean
Anyone know where I should start to fix the problem? I have gutted precats (MIL's working fine), dual exhaust, KKM for performance. Some people have suggested fuel filter or iat is the problem. Just looking for more opinions. Thank you!
