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.

This Part Fits:

Year	Make	Model	Submodel
2004-2005	Mazda	Miata	Mazdaspeed
1994-1995	Subaru	Impreza	Base
1996	Subaru	Impreza	Brighton
1994-1996	Subaru	Impreza	L
1994	Subaru	Impreza	LS
1995-1996	Subaru	Impreza	LX
1995-1996	Subaru	Impreza	Outback
1993-1998	Toyota	Supra	Base
1993-1998	Toyota	Supra	Twin Turbo