HOA 3-Port Boost Control Solenoid STI_2004-2007 making the car more responsive

making the car more responsive while delivering more grip

Designed to maximize the performance from the OE intake box

2008 -2026 Subaru WRX

These mounts can be seen on some of the fastest street and track EVO's in the world

HOA 3-Port Boost Control Solenoid STI_2004-2007 making the car more responsivePart #: HOA BCS This 3 Port Boost Control Solenoid, made in Germany, is a direct replacement on Subaru, Mitsubishi and other turbo vehicles and it does not place additional load on the ECU electronics. Unlike the factory solenoid, this 3 Port Solenoid allows you to raise the factory boost levels with more response and adding more control. With this solenoid no boost pressure is allowed through to the actuator so no premature boost can occur. The 3