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GrimmSpeed Boost Solenoid

GrimmSpeed Boost Solenoid

SKU: GRM 057002

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Features and Specifications
GrimmSpeed introduces the most complete and easy to use Subaru WRX, STi, FXT, and

LegacyGT 3-Port Electronic Boost Solenoid available on the market. Our aftermarket

boost controller allows you to raise the OEM boost levels in a quick and efficient manner.

If you try to raise the boost on the weak OEM boost solenoid it will start to become
unpredictable and unable to maintain proper and safe boost levels. Using our solenoid

you are able to spool your turbo quicker and maintain a rock solid boost level. We have

made our solenoid to withstand 120psi, way more than any Subaru will see.

Revolutionizing the Subaru boost solenoid market, we have created model specific install

brackets that allow you to directly fit our Boost Solenoid into your Subaru for a factory fit.

No more Zip-tying! We give you the factory fitment you have been waiting for.

Staying with the OEM fitment theme, our Boost Solenoid uses a Subaru style wiring

harness so you can simply unplug your OEM solenoid and plug ours in. No more cutting

the oem wiring and crimping wires together!

Also new to the Subaru boost solenoid market, we have used ultra low-profile hose

fittings to keep the unit as small and clean as possible. The hose fittings are nickel plated

brass so you don't have to worry about them snapping off like the plastic hose fittings!


Get into Boost Much Quicker (Flows 10% more than the competition)

Plug and Play into OEM Harness (no splicing wire like other BCS!)

Factory Fit with clean install

Works Safely with Factory Subaru ECU (custom coil to match ECU)

Nickel Plated Fittings as this is Built To Last (not the easily breakable plastic fittings!)

Easy to Install and Very Easy to Tune

The Only Direct Bolt-IN BCS for all Subaru Models

Users can use AN fittings with the solenoid.

MAC Valve's has completely custom made the valve for us(only MAC valve on the

market to be custom made for automotive tuning use).

Specifically designed by GrimmSpeed™ to work safely with the factory Subaru ECU
(requires tuning) and to reliably handle the vibrations and temperatures of your engine


The only direct “bolt in” design for all Subaru models. Direct bolt in mounting bracket and
hardware included! (specify which model before ordering)

Faster response and greater flow than any other valve out there. (by more than 10%!)

Nickel plated brass fittings. (unlike the competitors failure prone plastic fittings)
  • 2004 Subaru Forester XT
  • 2004 Subaru Impreza WRX STI

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