Thread: Finally! Riss Racing Downpipes for 335.. Amazing Power Gains and Info Inside!
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      06-29-2007, 11:31 PM   #34
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Drives: Audi TTRS, 335is
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2011 BMW 335is  [10.00]
I know they will be posting some videos soon, but what is the sound difference between the turbo back and your previous cat back? A lot louder?
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