Because of the fine tolerance between the piston and bore

All billet CNC construction and attractive anodized finish

One recirc port keeps the car's ECU happy

Model specific valve

Kompact Shortie Dual Port - EVR07 CVR1 Because of the fine toleranceTurbosmart's new Kompact EVR07 Dual Port blow off valve for the Clio RS 200 replaces the Clio's standard plastic bypass valve with a billet aluminium unit, designed with performance in mind. The Dual Port is a 50 50 recirculation vent to atmosphere valve for that classic vent to atmosphere sound at high boost, and quiet operation at low boost. The standard valve can bleed boost, and if you're chasing more power, it will struggle to keep up. The