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 reason a turbo back exhaust is so good is because it replaces all the pipes from the turbo to the back of the car.
Say good bye to the restrictive exhaust! Say good bye to the super restrictive stock downpipe! Say HELLO to lots of new horsepower and torque.