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      01-30-2013, 04:55 PM   #11
Jeff@TopGearSolutions
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Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com

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I think the only reason people want a catted version is for emissions purposes in some states or to reduce the smell/noise/raspy tones.

I agree the catted versions should be avoided, they tend to fail over-time, and really defeat the purpose of replacing the downpipes, which is to remove the biggest restriction, the cats.