Grimmspeed 3-Port Electronic Boost Control Solenoid 2010-2012 Legacy GT / 2015-2021 WRX w/ Aftermarket Turbo

Upgrade your Subarus boost control with the GrimmSpeed 3-Port BCS, designed for precision, reliability, and compatibility with aftermarket turbo setups. Proven on tens of thousands of vehicles worldwide, this solenoid delivers tighter boost control and faster response compared to the factory 2-port system.

Features:

• 1/4" Barbed Fittings: Matches factory turbo and wastegate hose size.
• 3-Port Design: Proprietary internal modifications for extreme conditions; interrupts boost signal for faster, more precise control.
• Plug-n-Play Wiring Connector: Directly connects to the factory harness—no splicing or modification needed.
• Flexible Mounting: Universal bracket and extended harness for easy installation with aftermarket turbo inlets.
• Proven Performance: Tighter boost control and consistency for safer tuning and better drivability.

Included in Kit:

• GrimmSpeed 3-Port Boost Control Solenoid w/ plug-n-play connector
• Laser-cut, CNC-bent steel bracket (black zinc plated)
• Zinc-plated barbed fittings, preassembled with anaerobic sealant
• 4ft of 1/4” vacuum hose w/ zip ties
• All necessary mounting hardware

Tuning Notes:
Installation affects boost behavior. Consult a tuner before driving aggressively to ensure proper calibration.

Fitments:

• 2015-2021 Subaru WRX (utilizing barbed aftermarket inlet)
• 2010-2012 Subaru Legacy GT (utilizing barbed aftermarket inlet)
• All known FA20 Equipped Vehicles (utilizing barbed aftermarket inlet)