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      01-08-2012, 11:52 AM   #38
540gone
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Drives: '13 X3 3.5, '14 640 GC
Join Date: Feb 2010
Location: Houston, TX & Santa Fe, NM

Posts: 81
iTrader: (1)

What I don't understand from the OP is there is no mention of whether he ordered his Evolve tune with the "CEL turned off" option selected or not? With the Challenge street pipe with secondary cat delete, the OE primary cats remain in place and the O2 sensors should operate just fine with no need for that tune option in the first place.

If that is the case, sounds like the issue might be somewhere else - like a bad O2 sensor. If his tune has that option, he should (as Mike suggests) simply ask Evolve for the tune with the CEL delete option not in place.

Maybe I'm missing something, but I don't understand why it's so critical to get it done on the weekend, it's just an inspection, and there was no mention of the car not running just fine.

I'll be interested so hear the resolution.
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