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      05-18-2011, 01:40 PM   #13
Mr. Clarkson

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Drives: 2011 135i
Join Date: Sep 2010
Location: San Diego

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Originally Posted by FDfranklin View Post
Does anyone know if a dealership would allow a catted DP? When I asked my dealership they said a downpipe would void warranty, but I didn't ask about a catted one..
Which is why you don't tell the dealership about your engine mods. Unless they were looking for it, or working directly under the splash shield, they'd only even notice a catless DP based off the smell.