Mac Valve 3 Port Boost Control SolenoidMore boost? Of course and this 3 port boost control solenoid will help you do it. 3 port boost control solenoids are the go to for the majority of boost control applications, they allow for precise control of boost and boost levels can be raised to around 2 3 times the spring pressure of the wastegate. For higher boost applications consider our 4 Port boost control solenoid. Features: Can be used with single or multiple wastegates (Using T junction)