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      05-23-2012, 11:33 AM   #6
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Location: N54tuning.com

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Gains from catted are about half the gains from cat less. The ar design DPs use high flow cats so there is still a big advantage getting them over stock, but of course not as much as if going cat less.

Mike