Invidia 02-07 Subaru Impreza WRX/STI High Flow Catted Downpipe w/ Extra 02 Bung

For a strong boost in power, the Invidia Down Pipe offers an alternative to other power-boosting enhancements. To see just how much power the Invidia Down Pipe can produce, a quick look at its dyno chart shows it easily added several horse-power units to the stock exhaust system. Each Invidia Down pipe features a large 4-in stainless-steel bellmount to enhance power by freeing excess gas. It sports a one -piece design, eliminating the need for the stock catalytic converter. In addition, each Invidia Down Pipe can be bolted up to any Invidia Exhaust or a stock exhaust for an easy installation.