Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

2004 sti exhaust

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Old Apr 4, 2004 | 05:35 PM
  #17  
raje7's Avatar
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Joined: Mar 2004
Posts: 24
From: baton rouge
Car Info: 2004 sti
i know that cat backs add some h/p but i dont want to change my 2004 sti unless i can find out how restricted it is to begin with .i figure someone on this forum should no where i can find out the true specs on what i got please helpppppp
Old Apr 4, 2004 | 05:44 PM
  #18  
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Dahveed aka Robin Hood
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Joined: Nov 2002
Posts: 4,793
From: Robbin' the Hood (Claycord)
Car Info: (RIP) '04 STi Silver
wrong.

Tanabes tend to have smaller piping then most other brands, HKS is waaay louder, and Tanabe is better made, and fits better.

I had the SMR on my old WRX, and will get another for my STi.

Originally posted by generalwrx
all tanabes are loud as heck. does anyone know if the hks carbon-ti gives the most horsepower on the sti like it did on the regular wrx?
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