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Old 07-11-2004, 04:26 PM   #2
Icon25rs
Scooby Newbie
 
Member#: 20728
Join Date: Jul 2002
Chapter/Region: MAIC
Location: Avengers Mansion
Vehicle:
2006 STI
WRB

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I have heard of some people going up to 3" exhaust. But I put a 2.5 on there to keep the backpressure up. the exhaust is just more free flowing.
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