Quote:
Originally Posted by tmaroufi
I'm running a defouler on my AR downpipe, and it doesn't keep the CEL off; however, it does help create about a 100 mile range where the sensor will not be triggered. I've been able to unflash and take my car in for service, with the downpipe installed.
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Quote:
Originally Posted by dcaron9999
Is this approach 100% effective? Would O2 sensor alerts be prevented, even without the Cobb AP or BMS JB4 tune, when visiting a dealership for example, with tune removed?
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According to the quote at least one person still had a CEL, but unless they state which code caused their CEL we don't know if it was the cats or something else. It looks like a number of others did not have any codes or CEL when using the antifoulers. They are pretty cheap on ebay, worth trying for the $10-30 (depending on if you need angled ones).