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.

• Patented Venting Bias Adjustment

  This Part Fits:

  Year	Make	Model	Submodel
  2008	Subaru	Forester	Sports 2.5 XT
  2004-2005	Subaru	Forester	XT
  2006-2008	Subaru	Forester	XT Limited
  2005	Subaru	Forester	XT Premium
  2001	Subaru	Impreza	L
  2001-2004	Subaru	Impreza	Outback
  2005	Subaru	Impreza	Outback Sport
  2001-2005	Subaru	Impreza	RS
  2002-2004	Subaru	Impreza	TS
  2002-2007	Subaru	Impreza	WRX
  2006-2007	Subaru	Impreza	WRX Limited
  2004-2014	Subaru	Impreza	WRX STI
  2007,2011-2014	Subaru	Impreza	WRX STI Limited
  2010	Subaru	Impreza	WRX STI Special Edition
  2006-2007	Subaru	Impreza	WRX TR
  2015-2020	Subaru	WRX STI	Base
  2015	Subaru	WRX STI	Launch Edition
  2015-2020	Subaru	WRX STI	Limited
  2019	Subaru	WRX STI	S209
  2016	Subaru	WRX STI	Series.HyperBlue
  2018	Subaru	WRX STI	Type RA