GFB T9225 HYBRID DUAL OUTLET VALVE - Audi S3 8L Heat Sleeving Must be fitted with the

Must be fitted with the Milltek Sport cat-back system and requires a stage 2 ECU remap

they share the same 4-layer construction with our signature insulation and a different top layer of carbon or titanium for aesthetics only

💡 Up to 18x brighter than OEM

All research

GFB T9225 HYBRID DUAL OUTLET VALVE - Audi S3 8L Heat Sleeving Must be fitted with 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