GFB 99-00 WRX/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 100psi+. 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/STi MY99-00, B4 Legacy, GT/XT Forester MY98-04

Fitment:
Subaru Forester XT 2004
Subaru Forester XT 2005
Subaru Impreza L 1999
Subaru Impreza L 2000
Subaru Impreza Outback 1999
Subaru Impreza Outback 2000
Subaru Impreza RS 1999
Subaru Impreza RS 2000
Subaru Legacy Brighton 1998
Subaru Legacy Brighton 1999
Subaru Legacy Brighton 2000
Subaru Legacy GT 1998
Subaru Legacy GT 1999
Subaru Legacy GT 2000
Subaru Legacy GT 2001
Subaru Legacy GT 2002
Subaru Legacy GT Limited 1998
Subaru Legacy GT Limited 2000
Subaru Legacy GT Limited 2001
Subaru Legacy GT Limited 2002
Subaru Legacy L 1998
Subaru Legacy L 1999
Subaru Legacy L 2000
Subaru Legacy L 2001
Subaru Legacy L 2002
Subaru Legacy L 30th Anniversary 1999
Subaru Legacy Limited 30th Anniversary 1999
Subaru Legacy Outback 1998
Subaru Legacy Outback 1999
Subaru Legacy Outback Limited 1999
Subaru Legacy Postal 1998
Subaru Legacy SUS 30th Anniversary 1999