Invidia High Flow Catted Downpipe w/ Extra 02 Bung for 02-07 Subaru Impreza WRX/STI (HS05SW1DOC) 1663 The smooth ratcheting action and

The smooth ratcheting action and good looks of the Quicksilver shifter puts everyone on notice that you're serious about performance and style

Increase turbo boost and optimizes throttle position sensor signals to improve vehicle performance

After about 5 kilometers of running the unit in you will need to adjust the units settings

Dual 6 IN large diameter

You won't have those concerns with our replacement clutch and transmission parts

Invidia High Flow Catted Downpipe w/ Extra 02 Bung for 02-07 Subaru Impreza WRX/STI (HS05SW1DOC) 1663 The smooth ratcheting action andInvidia High Flow Catted Downpipe w Extra O2 Bung for 02 07 Subaru Impreza WRX STI HS05SW1DOC Enhance the performance of your Subaru Impreza WRX or STI with the Invidia High Flow Catted Downpipe. Designed specifically for the 2002 2007 models, this downpipe includes an extra O2 bung for versatility in monitoring and tuning your exhaust gases. Improve flow, increase power, and enjoy the deep, resonant sound characteristic of Invidia's quality exhaust