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Single Outlet Valve for Recirc or Atmosphere VentingWhen 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 at the bottom, and dump through the sides.
Dual Outlet Valve for Combined Recirc and Atmosphere Venting - Three Valves in One!
The Evolution of the Dual-Outlet BOV - With or Without NoiseWhen 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 at the bottom, and dump through the sides.
Control the sound of the BOV from inside the cabin
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When you want no noise, no nonsense, just performanceWhen 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 at the bottom, and dump through the sides.
Accessories for your GFB Blow-off and Diverter ValvesWhen 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 at the bottom, and dump through the sides.
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Audi TT MK1 Roadster 8N 1.8 T
