Alloy Atmospheric ram dump valve available to fit the Impreza V4. Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.

-

Direct bolt on

Great atmospheric blow off sound

Internal twin pistons for faster response and durability

Polished finish

Hardware included

Made in UK