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GrimmSpeed 05-09 Subaru LGT / 08+ WRX Boost Control Solenoid


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The Original Direct-Fit BCS for turbo Subarus. GrimmSpeed is proud to provide the most complete and easy to use 3-Port Electronic Boost Solenoid for available for all turbo Subarus. Unlike your OEM 2-port solenoid, the GrimmSpeed BCS will allow for extremely high resolution boost control, providing your tuner with the hardware he needs to safely tune your car with rock solid boost levels. Using our solenoid, you are able to spool your turbo quicker and maintain tight control of boost levels throughout your power curve. In addition, our solenoid features a balanced valve to withstand up to 120psi without a slowing response by even a single millisecond.

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!

15min Installation - extremely simple with our written and video guides

This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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