The GFB Mach 2 is a 100% recirculating dump valve designed to improve boost response and acceleration on turbocharged engines. Utilizing TMS (Turbo Management System) technology, this dump valve offers several advantages over factory dump valves, while being simple to install.
Better Performance: It eliminates the weaknesses of factory valves that are not optimized for performance and are sometimes designed to release under high pressure.
Superior Durability: The Mach 2 is designed to withstand very high boost levels, ensuring longevity and reliability for even the most powerful turbo engines.
Improved Acceleration: With better boost management, you get faster and more precise throttle response.
TMS Technology: TMS technology allows maximum power to be recovered up to 30% faster when shifting compared to a stock bypass valve. This results in more responsive acceleration and increased overall performance.
Easy Installation: The Mach 2 is designed for direct replacement, with no additional adapters or modifications required. Simply remove the factory bypass valve and replace it with the Mach 2 for improved performance, without the noise often associated with atmospheric blow-off valves.
100% Recirculation: This valve operates as a 100% recirculation valve, meaning all air is returned to the system without additional noise, making it a perfect choice for those who want maximum performance without the blowing sound.
Pressure-balanced design:
Unlike factory valves, which can open at high pressure to protect the engine, the Mach 2 uses a balanced design to handle unlimited boost pressure. It is designed to work with any level of boost the turbo can produce, ensuring quick throttle response without pressure loss.
The GFB Mach 2 is an excellent choice for those looking to improve the performance of their turbocharged engine without adding extra noise. Easy to install and equipped with TMS technology, it offers improved throttle response and optimal boost retention, while ensuring long-term reliability.
Compatibility:
VW Passat B5-B5.5 1.8t 96-05 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
AUDI B5 (1995-2001) 1.8t Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
AUDI B5 (1995-2001) 1.8t
SAAB 9-5 Turbo 98-09
SAAB 9-5 Turbo 98-09
VW Golf GTI Mk4 1.8t 97-05 Note: When fitting a GFB valve, it must be fitted in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
SAAB 9-3 Turbo 98-02
AUDI TT 8N 1.8t 98-06 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
AUDI TT 8N 1.8t 98-06
AUDI TT 8N 1.8t 98-06 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
AUDI TT 8N 1.8t 98-06 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
VW Polo GTI Mk4F (Typ 9N3) 1.8t 05-09 Note: When fitting a GFB valve, it must be fitted in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
SAAB 9-5 Turbo 98-09
AUDI S3 8L (1999-2003) 1.8t Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
AUDI B5 (1995-2001) 1.8t Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
AUDI B5 (1995-2001) 1.8t
SAAB 9-3 Turbo 98-02
SAAB 9-3 Turbo 98-02
VW New Beetle 1st generation 1.8t 99-on Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
SAAB 9-3 Turbo 98-02
SAAB 9-3 Turbo 98-02
SAAB 9-5 Turbo 98-09
AUDI B6 (2001-2005) 1.8t Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
SAAB 9-3 Turbo 98-02
SAAB 9-5 Turbo 98-09
AUDI S3 8L (1999-2003) 1.8t Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
SAAB 9-5 Turbo 98-09
AUDI B6 (2001-2005) 1.8t Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
AUDI TT 8N 1.8t 98-06 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
SAAB 9-5 Turbo 98-09
FORD AUSTRALIA XR6 BA-BF 4.0L turbo 02-08 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
FORD AUSTRALIA XR6 BA-BF 4.0L turbo 02-08 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
MAZDA SP Turbo 2002 (150 kW/200 hp)
AUDI 8L (1996-2003) 1.8t Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
FORD AUSTRALIA Territory SY 4.0L turbo 06-11 Note: When installing a GFB valve, it must be installed in the OPPOSITE orientation to the factory plastic Bosch valve - i.e. air must enter the GFB valve from the bottom and flow out the sides.
VW Bora MK4 1.8t 00-05
AUDI S4 B5 (Type 8D) 2.7 Biturbo 97-01 (two valves required)
FORD AUSTRALIA XR6 FG 4.0L turbo 08-on
