Boost controller
（重定向自Boost control）
![A simple manual boost controller. A small screw is located in the top of the aluminum body to adjust bleed rate. This model is placed in the engine bay, however the vacuum line could be extended to allow it to reach into the passenger compartment.](/Images/godic/202501/01/Manualboostcontroller1900.jpg")
![A 3-port pneumatic solenoid. This solenoid allows interrupt or blocking of the boost pressure rather than just bleed type control.](/Images/godic/202501/01/3portsolenoid1900.jpg")
![A 4-port pneumatic solenoid installed to control a dual port wastegate controlled by a single PWM PID controller](/Images/godic/202501/01/4portsolenoid1900.jpg")
A boost controller is a device to control the boost level produced in the intake manifold of a turbocharged or supercharged engine by affecting the air pressure delivered to the pneumatic and mechanical wastegate actuator.
A boost controller can be a simple manual control which can be easily fabricated, or it may be included as part of the engine management computer in a factory turbocharged car, or an aftermarket electronic boost controller.