Designed to manually fine tune each application using boost pressure to open the exhaust flow to both turbine volutes. Perfect for turbocharger waste gate controls and Turbine Diverter Valves!

Stock Turbo - Waste gate spring is too weak resulting in drive pressure leakage
BD Orifice - Leaks boost off to slow waste gate opening but drive pressure leakage occurs
BD HD Waste Gate - Strong spring prevents drive pressure leakage
BD Boost Pressure Regulator Valve - Precise pressure opening control