GFB 02-07 WRX / 04-10 STI TMS Respons Blow Off Valve Kit

If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can achieve a blow-off sound without having to put up with the issues. Like all GFB valves, the Respons utilises GFB's proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100 psi plus. Put simply, it can hold more boost than any turbo could produce.
GFB?s Respons, allowing you to infinitely vary how much air is recirculated or vented to atmosphere. Simply by twisting the adjustment ring, you can change the sound of your BOV from silent to ear-shattering!?
Subaru WRX MY01-07, STi MY02-on, XT Forester MY05-08

Fitment:
Subaru Forester Sports 2.5 XT 2008
Subaru Forester XT 2004
Subaru Forester XT 2005
Subaru Forester XT Limited 2006
Subaru Forester XT Limited 2007
Subaru Forester XT Limited 2008
Subaru Forester XT Premium 2005
Subaru Impreza L 2001
Subaru Impreza Outback 2001
Subaru Impreza Outback 2002
Subaru Impreza Outback 2003
Subaru Impreza Outback 2004
Subaru Impreza Outback Sport 2005
Subaru Impreza RS 2001
Subaru Impreza RS 2002
Subaru Impreza RS 2003
Subaru Impreza RS 2004
Subaru Impreza RS 2005
Subaru Impreza TS 2002
Subaru Impreza TS 2003
Subaru Impreza TS 2004
Subaru Impreza WRX 2002
Subaru Impreza WRX 2003
Subaru Impreza WRX 2004
Subaru Impreza WRX 2005
Subaru Impreza WRX 2006
Subaru Impreza WRX 2007
Subaru Impreza WRX Limited 2006
Subaru Impreza WRX Limited 2007
Subaru Impreza WRX STI 2004
Subaru Impreza WRX STI 2005
Subaru Impreza WRX STI 2006
Subaru Impreza WRX STI 2007
Subaru Impreza WRX STI 2008
Subaru Impreza WRX STI 2009
Subaru Impreza WRX STI 2010
Subaru Impreza WRX STI 2011
Subaru Impreza WRX STI 2012
Subaru Impreza WRX STI 2013
Subaru Impreza WRX STI 2014
Subaru Impreza WRX STI Limited 2007
Subaru Impreza WRX STI Limited 2011
Subaru Impreza WRX STI Limited 2012
Subaru Impreza WRX STI Limited 2013
Subaru Impreza WRX STI Limited 2014
Subaru Impreza WRX STI Special Edition 2010
Subaru Impreza WRX TR 2006
Subaru Impreza WRX TR 2007
Subaru WRX STI Base 2015
Subaru WRX STI Base 2016
Subaru WRX STI Base 2017
Subaru WRX STI Base 2018
Subaru WRX STI Base 2019
Subaru WRX STI Base 2020
Subaru WRX STI Launch Edition 2015
Subaru WRX STI Limited 2015
Subaru WRX STI Limited 2016
Subaru WRX STI Limited 2017
Subaru WRX STI Limited 2018
Subaru WRX STI Limited 2019
Subaru WRX STI Limited 2020
Subaru WRX STI Series.HyperBlue 2016