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i had a mac off road H put on my 97 gt the front driver side O2 sensor didnt reach. i dont have a check engine light on, do i need to buy a longer o2 sensor cables and mil eliminators?
IDK if the light isn't coming on for the rears but to be safe might as well. As far as the front ones those are kind of required, I would make sure they are both connected
i had my o/r pipe for over a year and the cel light never came on so i never worried about it..recently it came on though so i put mils..id recomend it..car runs much smoother