The Hybrid valve is back! In 1999, GFB's first Hybrid valve pioneered the dual port design, which was so successful the technology has since been adopted by most other brands. By "staging" the two venting outlets, at low valve lifts most of the air is recirculated. As the car is driven harder, the valve opens further and more of the atmosphere venting port is exposed for a louder sound
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
2008	Subaru	Forester	Sports 2.5 XT
2009	Subaru	Forester	XT
2008-2010	Subaru	Forester	XT Limited
2010-2013	Subaru	Forester	XT Premium
2011-2013	Subaru	Forester	XT Touring
2008-2014	Subaru	Impreza	WRX
2010-2014	Subaru	Impreza	WRX Limited
2009-2014	Subaru	Impreza	WRX Premium
2005-2006	Subaru	Legacy	GT
2005,2007-2009	Subaru	Legacy	GT Limited
2006-2009	Subaru	Legacy	GT spec.B