Mach V 3-Port Boost Control Solenoid
Our three-port boost solenoid provides the fastest spool and rock-solid boost control. Installation is a snap, because it comes with a direct plug-and-play wiring harness. Fits all 2003+ Lancer Evolution, including Evo X!
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 inset diagram for how to plumb the vacuum lines.