3″ STi TurboBack Exhaust – Adds an @ssload of horsepower
The first step to mod the 2008+ STi is to get rid of the restrictive crappy stock exhaust system. Not only is the factory exhaust system ugly, it’s robbing you off tons of horsepower....
The first step to mod the 2008+ STi is to get rid of the restrictive crappy stock exhaust system. Not only is the factory exhaust system ugly, it’s robbing you off tons of horsepower....
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