Tactrix 3-Port Boost Control Solenoid for Subaru

What it is

It’s a 3-way electronic solenoid valve that replaces the OEM Subaru boost control solenoid. It sits in the turbo control system between:

• Turbo pressure source
• Wastegate actuator
• Intake/vent line

Its job is to regulate how much pressure reaches the wastegate, which directly controls how much boost the turbo produces.

Important thing to know (very important)

This is not a plug-and-play power upgrade by itself.

You must have:

• A proper ECU tune
• Correct wastegate duty cycle tables configured

Without tuning, the car can:

• Overboost
• Run dangerously lean
• Potentially damage the engine