Thread: Pre cat o2's
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      06-10-2018, 08:14 PM   #11
opihi5
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Quote:
Originally Posted by dparm View Post
It would absolutely make a difference. Tunes produce more power which means the explosion generates more heat. That heat is directed out the exhaust, and obviously the O2 sensors can't take it for very long.

The first troubleshooting step I would take is to run without the tune for a while and see if the sensors continue to fail, assuming the sensors are being installed correctly as others have mentioned.

It only seems to happen after driving hard for awhile so that makes sense and the codes usually go away after clearing. both sets i've gone through lasted about 2-3k miles before giving me problems. Guess i'll just have to keep replacing o2's if there aren't alternatives.
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