ok i read a bunch of other threads and i cant find an answer... i just put on an invidia uppipe and now i have a cel on that says its my 02 sensor.. if i get a new 02 will the cel still come on since i have a catless system??
lol yea i had it plugged in.. i got one i had to wire myself.. so now im just gonna try one that is a direct oem replacement.. but my question was will there still be a cel since i dont have a cat in the uppipe?
There shouldn't be a cel because the front o2 is before the cat. You may get a EGT code though if you eliminated that, which should be done anyway because the probe that goes into the up-pipe has been know to snap off from the heat and get sucked into the turbo.