Forge Motorsport Alloy Atmospheric Ram Dump Valve for Impreza MY 93-95
The Forge Motorsport Alloy Atmospheric Ram Dump Valve is specifically designed to fit the Impreza MY 93-95. Crafted from high-quality billet aluminium, this atmospheric diverter valve delivers the iconic “Whoosh” sound commonly associated with rally cars when the throttle is lifted. Not only does it enhance throttle response, but it also provides a higher clamping load to ensure more reliable boost pressure maintenance.
With the intention of venting 100% of the residual charge air in your forced induction system to the atmosphere upon throttle lift, Forge Motorsport has engineered this Dual-Piston Atmospheric Valve. While the design incorporates features to ensure compatibility with mass air-flow sensor equipped vehicles, it is important to note that individual applications may vary. It is recommended to ensure your engine-management-system, whether factory or aftermarket, can compensate for the loss of metered air through a vent-to-atmosphere valve.
The Forge Motorsport Alloy Atmospheric Ram Dump Valve comes with the following components:
- 1 x FMDVK013A Valve
- 1 x S25-19 Silicon Hose
- 3 x 35mm Hose Clamps
- 1 x 20mm Blanking Plug
- 1 x Forge Sticker
At Progressive Parts, we offer fitting services for this product at our performance workshop. Feel free to contact us for any further information or assistance. Enhance your Impreza’s performance and enjoy the exhilarating sound of rally cars with the Forge Motorsport Alloy Atmospheric Ram Dump Valve.

