Subaru Grimmspeed 3-Port Electronic Boost Controller STI-WRX

$113.00 $80.00

  • Never used just installed (car never started)
  • Still have box and comes with Vacuum line.
  • Super easily Install
  • Literally brand new!
  • Quick Specs
    • Decrease Spool Time – flows 10% more than the competition
    • Plug and Play into OEM Harness – no splicing wires like other BCS solutions
    • Works Safely with Factory Subaru ECU  custom coil to match ECU voltage
    • Nickel Plated Fittings – not the easily breakable plastic fittings!


Subaru Grimmspeed 3-Port Electronic Boost Controller 04-05 STI / 06-07 WRX

I have this brand new never ran (I did have it installed) but never finished the build, I am parting things out from it, and have no use for this in the new build. It is perfect condition and I will give the extra vac line with it. I Love Grimmspeed products this install took about 2 seconds and the manufacturing of the products is impressive. Super sad I never felt the turbo response from it. Have fun next owner! 🙂

Make me an offer but I am pretty firm on price also open to reasonable trades just shoot me your offer.

  • Fitment
    • 2006 Subaru WRX
    • 2007 Subaru WRX
    • 2004 Subaru STI
    • 2005 Subaru STI
    • 2006 Subaru STI
    • 2007 Subaru STI
    • 2004 Subaru Forester XT
    • 2005 Subaru Forester XT
    • 2006 Subaru Forester XT
    • 2007 Subaru Forester XT
    • 2008 Subaru Forester XT

Copied from Grimmspeed


Revolutionizing the Subaru boost solenoid market, we have created model specific install brackets that allow you to install our Boost Control Solenoid with a factory fit and finish. To top it all off, our solenoid also uses a Subaru wiring harness connector so that you can simply unplug your OEM solenoid and plug ours in. No more cutting and crimping OEM wires together!

The solenoid itself is one of a kind. MAC manufactures pneumatic control products for the largest commercial operations in the world, where every minute of downtime can cost tens of thousands of dollars, so we worked closely with their engineers to design this unique valve, incorporating proprietary features, exclusive to GrimmSpeed, that make our solenoid the toughest on the market. Those features include special seals to protect it from moisture and high temp coils to keep response times at 6 milliseconds or less, even in extreme heat. We have worked with many of the top tuners in the country to ensure that our solenoid works safely with the factory Subaru ECU.”