Go Fast Bits Respons Bypass Valve WRX (2002-2007) STI (2004-2018) Porsche These new mufflers maintain a

These new mufflers maintain a straight-through design that aids in exhaust gas flow and maximum power potential but keep sound pressure levels reasonable at idle and while cruising

The factory front mount is to small to utilize the entire flow of air coming through the bumper This larger front mount is able to capture and make more use of the air flow and exchange heat much more efficiently

VW Golf R MK6 and MK5 2006-2008

it gives each shift an entirely more positive feel

Go Fast Bits Respons Bypass Valve WRX (2002-2007) STI (2004-2018) Porsche These new mufflers maintain aThe Go Fast Bits Respons blow off bypass valve system for WRX STI Forester is much more than simply a noise maker or a factory valve replacement. The Go Fast Bits Respons valve features the GFB Turbo Management System (TMS), designed specifically for the purpose of turbo lag reduction. Go Fast Bits in house testing facilities have measured a return to peak boost up to 30% faster between shifts than most factory systems, giving you quicker on off boost