Turbosmart TS02031066 BOV KOMPACT Shortie Dual The Fiesta ST Shortie gives razor sharp valve response, and a serious increase in performance over stock valves. The Shortie's Dual Port design provides one plumb back port to keep the car's computer happy, and two vent to atmosphere ports for that trademark Turbosmart Blow-off Valve sound we all know and love. Easy to install, the Fiesta ST Shortie is supplied with all the necessary fitting hardware to replace the standard bypass valve.