Turbosmart TS-0304-1001 Blue Blow Off Valve Controller Kit Controls the pressure signal to the blow off valve controller and custom Race port Detects a negative voltage change in throttle position Reduces amount of rebuilds on your turbocharger and improves acceleration between gears Ideal for diesel engines and petrol engines Includes blow off valve controller, specific race port blow off valve, wiring loom, solenoid and bracket, reinforced pressure tubing, hose clamps and mounting hardware