GFB DV+ T9454 Blow off valve Ford FocusST Mk.3 250HP +all Borg Warner turbocharger

VTA T9454 DV+ Performance with Blow Off Valve Sound!

This valve is suitable if a vacuum-controlled valve is installed directly on the turbocharger.
Due to the GFB TMS technology, no springs of different hardness are necessary for the respective boost pressures, the valve regulates itself.
The adjustment screw on top of the valve can be used to adjust the spring preload of the piston spring in order to regulate the opening time during load changes and thus achieve a better response.
This adjustment has no effect on the tightness of the valve!

The VTA valve has the same design as the DV+ T9354 - i.e. the same advantages - but with an additional opening so that the excess charge air can escape into the atmosphere and thus produce the well-known blow-off sound.

Open diverter valves/blow off valves are not legal in the German STVZO.