BOV Supersonic Uni - Blue Tune The standard valves are often

The standard valves are often not up to eliminating damaging compressor surge

So what are you waiting for - get Turbosmart Mechanical Boost Gauge and start accurately regulating your boost today

Upgrade your existing Type 5 BOV to our new SmartPort spec with this simple kit

this blanking plug is the perfect solution

Smart Port trumpet eliminates stalling and allows smooth integration with the car’s factory engine mapping

BOV Supersonic Uni - Blue Tune The standard valves are oftenA full atmospheric BOV for racers and serious enthusiasts who want to be noticed. Supersonic provides a superior flow performance with the famous Supersonic sound. Featuring a tool free adjustment via a rotating cap and a positive seal piston, this is Turbosmart loudest BOV.