Turbosmart BOV Kompact Dual Port 25mm Awesome GTI Volkswagen Audi Turbosmart Kompact EM BOV Dual Port Turbosmart Kompact Dual Port Blow Off Valve BOV Nissan and Subaru Turbosmart Kompact Dual Port BOV 25mm Euro Sport Accessories Turbosmart Kompact Dual Port BOV WRX STI. Dual Port vents both to the atmosphere & back into the air intake. Ports with sequential timing allow quieter operation during normal driving, while getting all the benefits of a vent to atmosphere BOV under race conditions. This Part Fits: Year Make Model Submodel 2009 2013 Mini Cooper John Cooper Works 2007 2013 Mini Cooper S