This is a MAC Valves 3-port electronic boost control solenoid valve, an industrial-grade pneumatic solenoid widely used by aftermarket ECU and boost-control manufacturers (including Ecumaster, Haltech, AEM, MoTeC, Link and others) to PWM-modulate wastegate reference pressure for precise, closed-loop boost control. It is a normally-open 3/2 solenoid design, typically run in pairs for finer control resolution, rated for 12V operation, and is intended for off-road, closed-course and competition tuning use.
Fitment: Universal application for boost control on turbocharged engines, used in conjunction with an aftermarket ECU or standalone boost controller such as Ecumaster.