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Perfect for track going ST150's
Opel Astra VXR J type
Dome Volume - 15
1L Capacity Up KIT
Forge Dual Piston Ram Dump Valve K&N Perfect for track going ST150'sSuitable 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
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