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      09-29-2012, 05:40 AM   #188
bmwm3redblack
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Drives: BMW ///M3 E46, BMW 335XI
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Quote:
Originally Posted by Dr. G View Post
3" downpipes are just hype. 2.5" downpipes are more than fine even if the whole thing was 2.5"
So HP gains don't depend on size?
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