This 4 port boost control solenoid from Link Engine Management is ideal for ultra high boost applications as it provides precise control of boost pressure up to 7 times higher than the wastegate spring pressure (max pressure 120 Psi). The solenoid is compatible with all Link ECU's and is suitable for single or twin turbo applications with either internal or external wastegates. The controller allows boost pressure to be controlled by the wastegate if required which can be useful for launching and for low gear traction.Provides precise boost pressure control up to 120 PsiCompatible with all Link ECU'sCapable of controlling boost pressure up to 7 times that of the wastegate springShort stroke / high flow design for optimum performanceBalanced poppet not affected by pressure variationThe Link Engine Management 4 port boost control solenoid is designed to provide fast and consistent response times with high shifting forces making them ideal for highly tuned engines or for Motorsport use. S