Mach V 3-Port Boost Control Solenoid 2015-2021 WRX/2014-2018 FXT

Our three-port boost solenoid provides the fastest spool and rock-solid boost control. Installation is a snap, because it comes with a mounting bracket, vacuum line adapter for the turbo inlet pipe, and a direct plug-and-play wiring harness.

Note that this solenoid WILL require tuning of your boost control duty cycles. Do not bolt this on unless you have a programmable engine management system of some sort, and the ability to tune or have it tuned for you.

See the diagram for how to plumb the vacuum lines.

Fits all 2015-2021 Subaru WRX, and 2014-2018 Forester XT.