Turbosmart Kompact EM BOV Dual Port Turbosmart Kompact EM BOV VR9 Dual Port VUDU Performance Turbosmart BOV Kompact Dual Port 25mm T.I. Performance Turbosmart Smart Port Dual Port BOV Red Rallysport Direct. 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 2013 Audi A3 Base 2015 2017 Audi A3 Premium 2015 2017 Audi A3 Premium Plus 2015 2017 Audi A3 Prestige 2013 Audi A3 Quattro Base 2015 2017 Audi A3 Quattro Premium 2015 2017 Audi A3 Quattro Premium Plus 2015 2017 Audi A3 Quattro Prestige 2017 Audi Q3 Premium 2015 2017 Audi Q3 Premium Plus 2015 2017 Audi Q3 Prestige 2017 Audi Q3 Quattro Premium 2015 2017 Audi Q3 Quattro Premium Plus 2015 2017 Audi Q3 Quattro Prestige 2017 Audi Q7 Premium 2017 Audi Q7 Premium Plus 2015 2017 Audi S3 Premium Plus 2015 2017 Audi S3 Prestige 2015 2017 Audi TT Quattro Base 2015 2017 Audi TTS Quattro Base 2013,2015 2016 Volkswagen Golf R Base 2015 2016 Volkswagen GTI Autobahn 2013 Volkswagen GTI Base 2014 Volkswagen GTI Driver's Edition 2015 2016 Volkswagen GTI S 2015 2016 Volkswagen GTI SE 2014 Volkswagen GTI Wolfsburg Edition