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Old 04-16-2016, 12:15 PM   #361
oldgunfan
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Drives: 2014 BRZ sterling silver
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Quote:
Originally Posted by RedFRS4me View Post
I think something happened when i transitioned from e85 to the new ofh tunes. I took the car for a spirited drive to burn the rest of the e85 and it may have killed my o2 sensor. My STFT are 0 while my afr is between 12.5-13.5 while idle or cruising. When the car is cold it is normal but as the car warms up it goes rich and stft go zero no matter what throttle input.
Ok, that doesn't sound right. like what others have said at idle and just off idle(just putting around) it should be in the high to mid 14's. I don't know why just flashing a tune would kill your O2 sensor but hope you can fix it.
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