Boost Control Solenoid (4-port) 4-port boost control solenoids are often used for applications with high boost pressures. They allow boost levels up to 6-7 times the base spring pressure of the wastegate and let you use lower spring pressures for more precise control, especially at launch. This is particularly useful in high-performance applications with limited traction where lower boost pressure in lower gears and higher boost pressure in higher gears may be required. Features: Boost pressure up to 120 PSI Compatible with all Link ECUs Can be used with one or more wastegates Fast and consistent response High shift force MAC 45 seriesrobust, reliable, and long-lasting Short stroke length, high flow capacity Balanced valve, unaffected by pressure variations Specifications: MAC 45 series Max pressure: 120 PSI Thread size: 1/8BSPPL Operating voltage: 12 VDC (5.4W) Cable length: 18(45 cm) Includes 4 x 1/8BSP hose fittings for easy installation