The COBB Tuning 3 - Port Boost Control Solenoid (BCS) is a top - notch upgrade for modern turbocharged Subaru models. It fits 2008 - 2021 STI, 2008 - 2014 WRX, 2005 - 2009 Legacy GT, 2005 - 2009 Outback XT, and 2009 - 2013 Forester XT. With accurate and consistent boost control, it gets rid of the boost fluctuations in the OEM system, offering stable boost whether at stock levels or high - power build levels. The plug - and - play 18 - gauge wiring harness makes installation a breeze. It comes with 1/8' nickel - plated barbed fittings (1/4' ones available separately) that are low - profile and corrosion - resistant. Viton spools and seals ensure long life. The BCS is waterproof, rated up to 120psi, and has a custom aluminum mount. Installation is easy with a provided guide, and it directly mounts in the stock location and connects to the stock wiring harness.
Using your COBB Tuning 3 - Port Boost Control Solenoid is straightforward. First, find the stock location for the solenoid in your Subaru. Then, mount the solenoid using the custom aluminum mounting bracket and stainless - steel hardware provided. Connect the 18 - gauge wiring harness to the stock wiring harness. Use the boost - line to complete all the connections and zip - ties to neatly route it through the engine bay. Follow the installation instructions for both internal and external wastegate configurations. Remember, tuning is required after installation. For maintenance, keep it clean and dry. Since it's waterproof, you can wash it safely, but avoid using harsh chemicals. Check the fittings and seals regularly for any signs of wear. If you notice any boost fluctuations or issues, it might be time to inspect the solenoid thoroughly.
