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You are here: Home > Subaru Legacy GT 05-09 Boost Control Solenoids

The stock factory 2-port boost control solenoid is not meant to be use when your boost levels are increased. In result, it can cause damage to vital engine parts and reduce overall performance which end up doing more harm than good. When by upgrading to an aftermarket 3-port boost control solenoid, you will be able to raise and maintain solid boost levels throughout the RPM range with a much better response and control.