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Old 12-06-2012, 12:00 PM   #12
be0tch
Scooby Newbie
 
Member#: 66206
Join Date: Jul 2004
Chapter/Region: Tri-State
Location: Brooklyn, NY
Vehicle:
2005 WRX STi
FP HTA Green Turbo

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Quote:
Originally Posted by twinturbomeow View Post
would'nt a sti axleback create a bottle neck considering he's going from3" piping to 2.5?
I've got a much larger than stock turbo fitted on my car and the stock axleback costs me 5 - 10 whp tops. I gain around 15whp with a full cutout.

You are giving up some horsepower, but it isn't very much for the amount of sound the stock axleback is able to suppress. Obviously, if you want every last horsepower you'll want larger piping but it certainly won't be as quiet
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