GFB T9225 HYBRID DUAL OUTLET VALVE - Audi A3 8L 1.8T Model_M135i (F20 / F21) 3 & 5 Door (2012-2016) This listing is for the

This listing is for the fully recirculating version

BMW 5 Series M Pack rear skirt insert

and feedback has been consistently excellent: stronger pull

Tuned sound profile that is sporty under load and civilised on the motorway with minimal cabin boom

OEM-plus look and genuine performance gains without ruining ride quality

GFB T9225 HYBRID DUAL OUTLET VALVE - Audi A3 8L 1.8T Model_M135i (F20 / F21) 3 & 5 Door (2012-2016) This listing is for theAll the Performance with the Noise! The Hybrid valve is back! In 1999, GFBs 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