Aluminum Alloy Blow Off Valve S Diverter Turbo BOV Boost Fit For Volkswagen GTI Fit For Jetta Fit For Audi 1.8T 2.7T. The Splitter valve is a remarkable valve that gives a combination of blow off and recirculation valve operation all at the same time and has been specifically designed for the many turbo engined applications that operate metered airflow management systems. This means you get all the noise of the blow off valve whilst retaining the compatibility with the recirculation requirements of the engine management system. The blow off valve adapter delivers a satisfying atmospheric blow-off valve sound and boosts turbo engine functionality. The Turbocharger bypass diverter valve combines plastic and metal materials, offering wear resistance and anti-deformation properties for prolonged use., Manufacturer: HGDDBAE