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      12-06-2012, 01:26 AM   #13
RollingLower42
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Drives: 2012 BMW 335I
Join Date: May 2012
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How much HP does each downpipe add? Also can you explain the difference between the two?

How much louder would this make your car once you add it? Is it going to be super noticeable to authorities, or would it still be low key?
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