Fast boost response with two adjustable boost levels. Toggle between high and low boost on the fly. Ideal replacement for factory boost controllers. Both high and low boost settings are fully adjustable. All Turbosmart Gated Boost Controllers features Turbosmarts exclusive Gate feature which minimizes wastegate creep and can improve turboresponse by up to 800 rpm earlier in the rev range - this means that you can increase the performance and response from your engine without even raising the maximum boost level. Stable increases in boost over wastegate spring pressure of 200%+ for internal wastegate and 100% for external wastegates are common practice using our manual boost controllers. Manufactured from high-grade brass and billet aluminum and are renowned for their easy installation, robust design, stability and our detent adjustment system allows for accurate and simple tuning of boost pressure. The Turbosmart Gated Boost Control Valve range is ideal for mildly modified turbocharged engines and perfect for increasing boost levels on factory turbo cars and turbocharged engines.