Instant Horsepower Boost! 3″ STi Downpipe w/ High Flow Cat
The stock sti downpipe and cat are some of the most restricted pipes we’ve EVER seen. Nasty! I like this pipe because not only does it replace the stock downpipe, it also repalces the...
Tagged: CNT Racing
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....
