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      10-02-2012, 09:37 AM   #30
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Drives: BMW E92 335iA
Join Date: Aug 2011
Location: Belgium

Posts: 8
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I have an AR Design catted downpipe + BMW Performance exhaust for almost a year and I never had any warning lights or whatsoever. Even had a faulty valve been fixed under waranty with the catted downpipe still in place...
But... It is loud, sometimes too loud but I love it.
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