GFB DV+ T9454 blow-off valve Ford Focus ST Mk.3 250hp +all Borg Warner turbochargers (GFBDVT9454)

VTA T9454 DV+ performance with blow-off valve sound! This valve fits if a vacuum-controlled valve is installed directly on the turbocharger. Thanks to GFB TMS technology, springs of different stiffness are not needed for the respective boost pressures; the valve regulates itself. The adjusting screw on top of the valve lets you set the preload of the piston spring to regulate the opening time during load changes and so achieve better response. This setting has no effect whatsoever on the tightness of the valve! The VTA valve has the same design as the DV+ T9354 - and therefore the same advantages - but also has an opening so that excess charge air can escape to the atmosphere and produce the familiar blow-off sound. Open diverter valves / blow-off valves are not road-legal under the German StVZO.

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