Cobb 15-17 Subaru WRX 3-Port Boost Control Solenoid

Specifications   Part Details: The COBB 3-Port Boost Control Solenoid for the 2015–2017 Subaru WRX is engineered to provide more precise and consistent boost regulation compared to the factory 2-port system. By increasing the ECU’s control authority over boost pressure, this upgrade delivers improved turbo response and stable boost delivery across the rev range. The 3-port design allows for finer boost targeting when paired with proper ECU calibration. It is commonly installed alongside intake systems, intercooler upgrades, turbo modifications, and custom tuning on FA20DIT platforms to help eliminate boost spikes, fluctuations, and creep. Key Features 3-port boost control design for improved boost precision Enhanced turbo response and boost stability Direct-fit application for 2015–2017 Subaru WRX (FA20DIT) Supports higher and more consistent boost levels than OEM solenoid Engineered for use with proper ECU tuning calibration What’s Included COBB 3-port boost control solenoid Vehicle-specific mounting hardware Pre-configured vacuum lines and fittings Installation instructions Frequently Asked Questions Is ECU tuning required after installation? Yes. Installing a 3-port boost control solenoid requires updated ECU calibration to safely manage boost targets and maintain proper air-fuel ratios. What are the benefits over the factory solenoid? The factory 2-port solenoid has limited boost control authority. A 3-port design allows more accurate boost targeting and improved consistency during tuning. Is this compatible with stock turbo setups? Yes. It can be used with stock or upgraded turbo systems when paired with proper tuning. Recommended Supporting Forced Induction Components Blow Off Valves – help manage excess boost pressure and protect the turbo system under load. Intercooler Kits – reduce intake air temperatures and support consistent boost performance. Turbochargers – pair with precise boost control for optimized airflow and power output. Wastegates – regulate boost pressure and maintain stable turbo system operation. COBB Tuning Performance Products – explore additional tuning and turbo system upgrades from COBB. Subaru WRX Performance Parts – browse compatible upgrades for WRX turbo platforms. Subaru STI Performance Parts – discover supporting turbo components for STI builds. Subaru Forester XT Performance Parts – find boost control and turbo system upgrades for Forester XT models. Shipping   Shipping Options: WrenchMastersAuto.com ships your performance parts safely, quickly and conveniently nationwide via the most trusted shipping carriers such as: UPS, Fed Ex, USPS, and DHL.          Delivery Times: In Stock: 3-7 Business Days Custom Orders: 2-6 Weeks, Please Email: [email protected] or Call: 727-565-9808 for Questions. Enjoy FREE SHIPPING on most orders over $199! Contact WrenchMasters   Have Questions? Need Assistance? 727-565-9808 Our expert team members are available Mon-Friday 8:00 AM to 5:30 PM EST to provide support and answer any questions or concerns before or after your parts purchase. Part Installation Want your performance parts professionally installed? Save time, stress & hassle by scheduling your auto appointment online below. Our team of ASE certified master techs will make sure your parts are installed properly at our St.Petersburg, Florida shop location. Schedule Install Now Performance Parts Locator Looking for a specific part not listed on our online store? WrenchMastersAuto.com has access to over 40,000 aftermarket performance parts for vehicles of all makes and models, old and new.  Fill out the parts request form below, and our parts specialist will contact you within 24-48 hours.