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Company23 Standard Boost Control Solenoid - 04+ STI

Company23 has released their boost control solenoid for those of you who want drastic improvements in boost response, as well as control over the OEM 2-port boost control solenoid.

This boost control solenoid has been designed to conveniently replace the OEM unit with OEM style mounting brackets, and a plug and play electrical connector. Included is a proven MAC solenoid valve, and it has a custom built solenoid that matches OEM ECU current draw that also includes a high vibration coil, and viton seals.




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