Features Most versatile blow off valve Fully adjustable Reduces turbo spool-up between gears Suits medium sized turbocharger systems on 4 to 6 cylinder engines developing 200 to 600 horsepower Includes 1 dual port blow off valve, 1 blanking plug, 1 extra trumpet, 1 v-band clamp, 32 millimeter aluminum weld-on inlet adapter and sticker and instructions CD Product Description The new Dual Port is the most versatile blow off valve in the Turbosmart range combining the best features of atmospheric and recirculating (bypass) valves in a single product. The non-adjustable factory bypass valves on most turbo cars are designed to leak at higher than factory boost levels. Upgrading to good quality performance blow off valves is essential when increasing boost levels. Turbosmart Dual Port blow off valve is fully adjustable and is capable of holding and controlling high boost. Turbosmart Dual Port will also reduce turbo spool-up between gears for even greater performance from your turbocharged vehicle. Features quick-release V-Band clamp, both atmospheric and bypass ports and easily convert to a fully atmosphere or bypass valves and sequential ports provide a quiet operation on mild boost and full performance at full boost. Available in blue or black. Suits medium sized turbocharger systems on 4 to 6 cylinder engines developing 200 to 600 horsepower. Includes 1 Dual Port blow off valve, 1 blanking plug, 1 extra trumpet, 1 V-band clamp, 32 millimeter aluminum weld-on inlet adapter and sticker and instructions CD.