Invidia Bellmouth Downpipe
The Invidia Bellmouth Downpipe for the 2002-2007 WRX and STI is designed to maximize exhaust flow to the highest level possible. Featuring a wide-open bell at the turbo, this downpipe provides the maximum exhaust flow possible on either your stock or aftermarket turbocharger setup. This product is a simple yet effective design that will net massive power and torque gains on your Subie.
Subaru STI 2004-2007
Subaru WRX 2002-2007
Invidia offers downpipes for the Subaru WRX & STI that are designed in three different configurations. Every Invidia WRX & STI downpipe features 3" diameter stainless steel piping, thick flanges, and a cast upper section for optimal flow, performance, and longevity.
Invidia's catless downpipes will cause a Check Engine Light (CEL) on your 2002-2007 WRX or STI. While this isn't harmful, it can be annoying and disables the cruise control, but you can use a software solution such as the Cobb Accessport to eliminate these codes and make more use of the newly available performance the Invidia downpipes offer. The high-flow cat Invidia WRX & STI downpipe is not emissions legal, and may still cause a CEL, but it does help to reduce boost spiking on 2.5L cars.