DonMc
Enthusiast
when the o2 sensor is affected due to addition of headers and hi-flo cats doesn't it affect the fuel/air mixture adversely?? i am assuming that it senses more oxygen and thus believes the engine is running lean and increases fuel...so effectively instead of the optimum being a 500mv output it is now lower say 400mv(don't know real value) due to modifications...seems the car will continue to run rich forever...does the mopar pcm totally eliminate this monitor??
