UPREV Tuned can't pass EMISSIONS

Originally Posted by TVPostSound Uprev tuner disabled the DTCs die to not having cats, otherwise DTCs would go off. Once the stock tune is returned, DTCs will be set due

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UPREV Tuned can't pass EMISSIONS

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02-08-2014, 08:13 PM

#24 (permalink)

jlo370z

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Quote:

Originally Posted by TVPostSound

Uprev tuner disabled the DTCs die to not having cats, otherwise DTCs would go off.

Once the stock tune is returned, DTCs will be set due to O2 senors reading high due to no cats, failing again.

The only fix is to reinstall the cats, and the stock tune.

who needs a fix when you can use a band aid.

two tunes identical, one with dtcs on and one with them off. when you have to test, flash to the ones with them in the ready position. drive 100 miles and test before they turn on. pass test, flash back to the other tune with them off

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