Material: 6063-T6 aluminum alloy color: black, blue, red and silver TURBO TURBO with pressure relief valve. Installation method (for reference only) : cut off the turbo vacuum tube, install the tee, connect the vacuum tube at one end of the controller and connect the pressure relief valve at the other end, and seal well. And then you do the debugging. Adjust the screws on the top, adjust the car to a stable idle speed can be! The manual booster controller is a simple mechanical and pneumatic control that allows some of the pressure from the exhaust bypass valve actuator to escape or escape into the atmosphere or return to the intake system. This can be as simple as t-mounting with a small drain screw on the booster control line of the actuator attachment. Screws can be screwed to various degrees to allow air to escape from the system, thereby reducing the pressure on the exhaust door actuators and thus increasing the level of pressurization. These devices are popular because their cost is negligible compared to other devices that provide the same power increase. Turbine pressure regulating valve: The pressure regulating valve regulates air pressure to improve engine performance and reduce fuel consumption. When the turbine ACTS, extremely high pressure will be generated inside. Although the turbine itself has the aperture to release high-pressure gas, it is still somewhat insufficient in the face of continuous pressurization. By means of pressure relief valve, high-pressure gas can be quickly released to facilitate the next pressurization action. This can not only protect the turbine, but also eliminate part of the phenomenon of turbine hysteresis