Cobb 08-12 Mitsubishi EVO X / 09-12 Ralliart 3-Port Boost Control Solenoid

Specifications   Part Details: The COBB 3-Port Boost Control Solenoid for the 2008–2012 Mitsubishi EVO X and 2009–2012 Ralliart is engineered to provide improved boost accuracy and control compared to the factory 2-port system. By increasing the ECU’s authority over boost regulation, this upgrade delivers more consistent turbo response and stable pressure management under load. The 3-port design allows for finer boost targeting when paired with proper ECU calibration. It is commonly installed alongside intake upgrades, exhaust modifications, turbo upgrades, and custom tuning to help eliminate boost fluctuations, spikes, and creep often seen with stock boost control components. Key Features 3-port solenoid design for enhanced boost control precision Improved turbo response and boost consistency Direct-fit application for EVO X and Ralliart models Supports higher and more stable boost levels than factory solenoid Designed for use with proper ECU 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? Yes. Installing a 3-port boost control solenoid requires updated ECU calibration to safely control boost pressure and maintain proper air-fuel ratios. What benefits does a 3-port solenoid provide? A 3-port design offers greater control authority over boost pressure, improving consistency and allowing more precise boost targeting during tuning. Can this be used with a stock turbo? Yes. It is compatible with both stock and upgraded turbo systems when properly tuned. 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.