The COBB 3-Port Boost Control Solenoid (BCS) is a top - notch upgrade for 2015 - 2021 Subaru WRX models, except for some northern vehicles with Subaru OEM cast aluminum turbo inlet. It offers the flexibility and precision needed to control boost through the factory ECU. Many turbocharging system upgrades, like larger turbochargers and external wastegates, demand the enhanced performance, reliability, flexibility, safety, and installation options that this BCS provides.
**Features**:
- Accurate and consistent boost control for a stable driving experience.
- A plug - and - play 18 - gauge wiring harness for easy electrical connection.
- 1/4' nickel - plated barbed fittings that resist corrosion and keep the unit compact.
- Rated up to 120psi, suitable for various boost levels.
- A billet aluminum mount for durability and easy installation.
- Simple installation process, with an installation guide included.
- Tuning is required.
This BCS eliminates the boost fluctuations of the OEM system, providing stable and repeatable boost control whether at stock or extremely high boost levels. It features low - profile barb fittings and uses Viton spools and seals lubricated with Dow Corning silicone grease for long life. The device is waterproof, with an O - ring sealed manual override, a waterproof grommet - sealed wiring harness, and ultrasonically welded solenoid wires. COBB Tuning has made installation a breeze. It mounts in the stock location and plugs directly into the stock wiring harness. It comes with a billet aluminum mounting block, stainless steel hardware, a boost - line, and zip - ties, along with easy - to - understand installation instructions for both internal and external wastegate configurations.
Using the COBB 3 - Port Boost Control Solenoid is straightforward. First, find the stock location for mounting the solenoid in your 2015 - 2021 Subaru WRX. Mount it using the provided billet aluminum mounting block and stainless steel hardware. Connect the solenoid to the stock wiring harness using the plug - and - play 18 - gauge wiring harness. Then, use the boost - line to complete all the necessary connections and neatly route it through the engine bay with the zip - ties.
Remember, tuning is required after installation. Make sure to follow the installation instructions carefully, especially the routing instructions for internal or external wastegate configurations.
For maintenance, since the solenoid is waterproof, you can safely wash it. However, periodically check the Viton spools and seals for any signs of wear. If you notice any issues with boost control or the device's performance, it might be time to inspect the wiring, fittings, and other components.
