Uppipe and downpipe again...hehe
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Joined: Apr 2003
Posts: 159
From: ALHAMBRA, CA
Car Info: 2002 IMPREZA WRX WAGON
Uppipe and downpipe again...hehe
Can I install uppipe and downpipe with the stock catback?
since the air flow for up and downpipe increase, will that increased air flow will block by the small pipe of stock cat back and create tubulence that will affect the performance?
anyway how size is the stock cat back? 2" or 2.5"?
since the air flow for up and downpipe increase, will that increased air flow will block by the small pipe of stock cat back and create tubulence that will affect the performance?
anyway how size is the stock cat back? 2" or 2.5"?
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tony1w
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Mar 14, 2009 07:53 PM