bad o2 sensor slowing me down?

[JiveMasterT]

i have a bad o2 sensor and because of it my car is running kinda rich. my question is, is this slowing me down? at the track i ran a 14.9 with some bad plugs and a bad o2 sensor, and i think my car should be faster and i was wondering if this could be the cause. thanks.

 

[VR-4Door]

the O2 sensor shouldnt affect your cars performance, spark plugs kinda will. but the o2 sensor shouldnt make your car run rich eitheir. what can cause your car to run rich is an atmospheric relaseing BOV if yours does that thats why your car is running a little to rich. but one thing you cant forget is that turbo cars always run i little rich