Fitment: This kit is designed specifically for the 2015 - 2021 Subaru WRX and only fits with the factory composite turbo inlet. A 3 - port electronic boost control solenoid (EBCS) offers clear advantages over the factory 2 - port system during tuning. It interrupts the boost signal from the turbo to the wastegate and redirects it back to the turbo inlet. This is crucial as the factory Mass Airflow Sensor has measured this air and expects it to be used in combustion, rather than vented. The factory system 'bleeds' the signal, which is less complex but slower and less precise. The dyno chart shows that after installing the GrimmSpeed 3 - Port BCS, there's much tighter boost control and consistency, which is safer for your car and easier for your tuner. Features: Custom Machined Adapter: Utilizes the factory turbo inlet recirculation port with a VITON O - Ring seal. Black Anodized Finish: Protects against corrosion in tough conditions. 1/4' inch Barbed Fittings: Zinc plated and preassembled with anaerobic sealant, matching factory hose sizes. 3 - Port Solenoid: With proprietary internal modifications for extreme automotive use. Plug - n - Play Wiring Connector: Connects directly to the OEM wiring harness without modifications. Compact Design: Mounts in the factory location with the included adapter and zinc - plated steel bracket. The mounting bracket is laser - cut, CNC - bent steel, zinc - plated, and comes with stainless press - in nuts. It provides quicker and more precise boost control, arrives fully assembled, and tuning is required. Also includes an Installation Guide. What's in the Box: (1) Fully assembled 3 - Port Boost Control Solenoid with Plug - n - Play Connector, (1) 1/4' inch hose (two feet long), zip ties, and all necessary installation hardware.
Using your GrimmSpeed 3 - Port Boost Control Solenoid Kit: First, make sure your car is a 2015 - 2021 Subaru WRX with the factory composite turbo inlet. Start by mounting the solenoid in the factory location using the included adapter and zinc - plated steel bracket. Connect the 1/4' inch barbed fittings to the factory turbo and wastegate hoses. The plug - n - play wiring connector should be plugged directly into the OEM wiring harness. After installation, tuning is required to get the best performance. Remember, this kit only works with the factory composite turbo inlet. Don't try to use it with other setups. Maintenance is simple. The black anodized finish protects the assembly from corrosion, but it's a good idea to check the fittings and wiring periodically for any signs of wear or damage. If you notice any issues, consult a professional mechanic.
