The stock STI exhaust systems leaves a lot to be desired in terms of flow and aural excitement. And after experiencing AVO's exhaust you will know exactly what it is that it desired! Our exhaust system helps your turbo spin up sooner by increasing flow, improving response and power across the board.
The AVO Front Pipe is constructed from stainless steel, enduring longevity. It also features a divorced waste gate dump tube, removing a major bottleneck present on the factory exhaust system. The stock exhaust flange simply has a blank plate at that point, putting a major lid on performance.
Your stock front pipe also uses a fairly restrictive catalytic converter. The AVO front pipe addresses this issue with a high-flow cat converter.
All this adds up to a huge decrease in back pressure and a big increase in performance. Use your turbo to it's full potential!
NOTE : This system is supplied with a metal cat converter.
Stainless Steel Construction
3" diameter pipes
4" rolled exhaust tip
Impreza WRX STI: 2001-2007 [turbocharged]