GFB HYBRID TMS Dual Port 03-09 Subaru Legacy GT

ALL THE PERFORMANCE WITH THE NOISE! 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. As a benefit, this system makes it possible to use these valves on cars with sensitive airflow meters that often suffer issues such as backfiring and/or stalling, whilst still achieving the signature blow-off sound.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