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      09-23-2012, 03:32 PM   #21
KmndntKlink
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Drives: 2010 e92 m3
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Quote:
Originally Posted by Rekrul View Post
But what if you're catless? No check engine light? Wouldn't you then perhaps want to flash back to stock as to not raise suspicions?
I'd say so, but if you're catless you won't be passing emissions so don't you have to reinstall your cats anyway?

On warranty ramifications, I don't think it would matter. Exhaust shouldn't cause problems in other systems, just increase emissions. I think its safer to just flash back, it takes 5 minutes apparently. If you have your stock pipes, I'd flash back and put em back on so they don't have reason to dig further and possibly try and wrangle their way out of the warranty coverage. To me catless is great source for power gains, but not worth the hastle tbh, unless its a track only/ autox you want.
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