COBB 3-Port Electronic Boost Control Solenoid (EBCS) - 2015-2021 Subaru WRX

Achieve precise, stable boost control with the COBB 3-Port Electronic Boost Control Solenoid (EBCS). Engineered specifically for the 2015-2021 Subaru WRX, this upgraded solenoid eliminates the boost fluctuations and inconsistencies of the factory 2-port design, delivering rock-solid boost control for tuned engines and ensuring your WRX performs exactly as your tune intends.

Key Features:

• 3-port design for superior boost control vs. factory 2-port solenoid
• Eliminates boost fluctuations and overboost issues
• Direct replacement for factory boost control solenoid
• Precise boost control across entire RPM range
• Essential for Stage 2+ tuned WRX builds
• Requires COBB Accessport or compatible ECU tuning
• Bolt-on installation - no modifications required
• COBB quality engineering and materials

Performance Benefits:

• Stable Boost Control: Eliminates boost spikes and fluctuations for consistent power delivery
• Precise Tuning: Allows tuner to dial in exact boost targets across RPM range
• Prevents Overboost: Eliminates dangerous overboost conditions that can damage engine
• Improved Drivability: Smoother, more predictable power delivery
• Essential for Big Turbo: Required for proper boost control on upgraded turbo setups
• Supports Higher Boost: Handles increased boost levels that factory solenoid cannot

Specifications:

• Brand: COBB Tuning
• Part Number: 714750
• Design: 3-port electronic boost control solenoid
• Installation: Direct bolt-on replacement
• Tuning Required: Yes - requires COBB Accessport or compatible ECU tuning
• Weight: 1 lb
• Barcode: 714750

Fitment Information:

• Compatible Vehicles:
• 2015-2021 Subaru WRX (FA20DIT engine)
• Note: Designed specifically for 2015+ WRX with FA20DIT turbocharged engine. NOT compatible with WRX STi.

What's Included:

• 1 x COBB 3-Port Electronic Boost Control Solenoid
• Mounting hardware (if required)
• Installation instructions

Installation Notes:

• Professional installation recommended
• Installation time: approximately 1-2 hours
• Located in engine bay - accessible from above
• Disconnect battery before installation
• Torque all fasteners to manufacturer specifications
• IMPORTANT: ECU tuning REQUIRED after installation - will not work with factory tune

Why Upgrade to 3-Port EBCS?

The factory 2-port boost control solenoid is adequate for stock boost levels but becomes a significant limitation when you increase boost or add performance modifications. The factory solenoid struggles to maintain stable boost control, resulting in boost spikes, fluctuations, and inconsistent power delivery. In extreme cases, the factory solenoid can cause dangerous overboost conditions that can damage your engine.

The COBB 3-Port EBCS uses a superior 3-port design that provides much finer control over boost pressure. This allows your tuner to dial in precise boost targets across the entire RPM range, eliminating fluctuations and ensuring your engine performs exactly as intended. The result is smoother power delivery, more consistent performance, and safer operation.

When Do You Need This?

The COBB 3-Port EBCS is considered essential for:

• Stage 2+ tuned WRX builds running increased boost
• Big turbo conversions or upgraded turbo setups
• Any WRX experiencing boost spikes or overboost issues
• Builds targeting 350+ HP where precise boost control is critical
• Track-focused builds requiring consistent, predictable boost

Tuning Required:

IMPORTANT: The COBB 3-Port EBCS requires ECU tuning to function properly. You MUST have a COBB Accessport or work with a professional tuner who can calibrate the ECU for the 3-port solenoid. The factory ECU tune is calibrated for the 2-port solenoid and will not work correctly with the 3-port design.

How It Works:

The boost control solenoid regulates boost pressure by controlling how much pressure is sent to the wastegate actuator. The factory 2-port design has limited control authority, while the COBB 3-port design provides much finer control. This allows the ECU to make rapid, precise adjustments to boost pressure, maintaining your target boost level regardless of engine load, RPM, or environmental conditions.

Why COBB?

COBB Tuning is known for precision-engineered performance parts that deliver real-world improvements. Their 3-Port EBCS is designed specifically for the FA20DIT platform, ensuring perfect fitment and reliable operation. COBB's extensive testing and validation ensures this solenoid will perform flawlessly under the most demanding conditions.

Perfect Pairing:

The COBB 3-Port EBCS works seamlessly with:

• COBB Accessport V3 (required for tuning)
• COBB Stage 2+ power packages
• Big turbo upgrades
• Upgraded intercoolers and intake systems

Perfect For: Stage 2+ tuned WRX builds, big turbo conversions, or any WRX owner experiencing boost control issues who wants precise, stable boost control.

Pro Tip: Install the 3-Port EBCS before increasing boost significantly. Trying to run high boost on the factory 2-port solenoid can result in dangerous overboost conditions.

Essential Upgrade: The COBB 3-Port EBCS is considered mandatory for any WRX running Stage 2+ tunes or big turbo setups where precise boost control is critical.

Achieve precise, stable boost control with COBB's 3-Port Electronic Boost Control Solenoid - engineered for the 2015-2021 Subaru WRX.