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      04-27-2013, 09:12 PM   #48
gatorfast
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Drives: 528i M Sport
Join Date: Jan 2008
Location: SoFla

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Quote:
Originally Posted by beemerboy305 View Post
has anyone got proven gains with doing this ?? is it for sure not gonna cause back pressure by removing that and not just replacing with a straight pipe
No gains. This is just for sound.