GFB HYBRID TMS Dual Port 01-07 Subaru WRX / 05-08 Forester XT

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 2005 Subaru Forester XT 2006-2008 Subaru Forester XT Limited 2005 Subaru Forester XT Premium 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 2016 Subaru WRX STI Series.HyperBlue