GFB HYBRID TMS Dual Port 03-09 Subaru Legacy GT single-gated 1975-1978 GMC C25 Suburban

1975-1978 GMC C25 Suburban

reliability

Year Make Model Submodel 2007-2010 Chevrolet Silverado 2500 HD LT 2007-2010 Chevrolet Silverado 2500 HD LTZ 2007-2010 Chevrolet Silverado 2500 HD WT 2007-2010 Chevrolet Silverado 3500 HD LT 2007-2010 Chevrolet Silverado 3500 HD LTZ 2007-2010 Chevrolet Silverado 3500 HD WT

It's easy to overlook the small details

GFB HYBRID TMS Dual Port 03-09 Subaru Legacy GT single-gated 1975-1978 GMC C25 SuburbanALL 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