Dual Piston Blow Off/Dump Valve Volkswagen > Touran > II 1.4 150BHP noticed the difference instantly without

noticed the difference instantly without having the car remapped

The filter is located at the front of the engine bay (on the left as you open the bonnet)

For those that have used a tuning box

developed and manufactured entirely in Great Britain and is covered by our Worldwide lifetime warranty

and a wall thickness of 5mm

Dual Piston Blow Off/Dump Valve Volkswagen > Touran > II 1.4 150BHP noticed the difference instantly withoutSuitable for most turbo cars with an Air Flow Meter. Made from billet aluminium, this atmospheric diverter valve dumps the charge air to atmosphere creating the "Whoosh" sound when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Unlike single piston or diaphragm diverter valves, this uses counter balanced springs and dual pistons to prevent the valve from leaking