Kompact Shortie Dual Port TS-0203-1061A fixed 50 50 vented valve, the Turbosmart Shortie Kompact Dual Port valves have been specifically designed to suit BorgWarner EFR and KKK turbos. They also fit the popular Ford Ecoboost engines. Unlike the standard plastic valves that use un reinforced diaphragms and are known to crack under increased boost, the new BW KKK Ecoboost Kompact valves use O Ring sealed piston, which, coupled with their billet aluminium construction, give them over 30PSI