TR 3-Port Electronic Boost Solenoid for Subaru STi 2004-2007/ WRX 2006-2007
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Fitment
Fitment
Description
Description
(2002-2007) Electronic Boost Solenoid for Subaru Turbo Engines
Our Electronic Boost Solenoid is a precision-engineered aftermarket replacement specifically designed for 2002-2007 Subaru turbo models. This solenoid improves boost response, enhances turbo performance, and provides superior durability compared to OEM solenoids.
Technical Specifications
Operating Voltage: 12V DC
Current Draw: 450-500mA
Duty Cycle: 0-100% PWM
Response Time: <10ms
Connection Type: 2-Pin Weatherproof Connector
Thread Size: M12x1.0
Pressure Range: 0-35 PSI
Temperature Range: -40°C to 125°C
Body Material: Anodized Aluminum
Seal Material: Viton
Vehicle Compatibility
- 2002-2007 Subaru Impreza WRX
- 2004-2007 Subaru Impreza WRX STI
- 2005-2006 Subaru Legacy GT
- 2004-2007 Subaru Forester XT
- Compatible with stock and mild aftermarket turbo systems
- Works with factory and aftermarket ECU tunes
Performance Features
- Direct OEM replacement with performance improvements
- 15% higher flow rate compared to stock solenoids
- Improved boost response and reduced turbo lag
- Enhanced durability for high-boost applications
- Superior heat dissipation for consistent performance
- Optimized internal port design for smoother airflow
- Tested to over 1 million cycles for maximum reliability
- Perfect for both stock and modified applications
Installation Guide
Installation is straightforward and can be completed in under 30 minutes with basic hand tools:
- Locate the factory boost solenoid on the intake manifold near the throttle body
- Removal of intercooler may be required for easier access
- Disconnect the electrical connector by pressing the tab and pulling gently
- Disconnect the vacuum lines, taking note of their orientation
- Remove the mounting bolt(s) securing the solenoid
- Install the new solenoid in the reverse order
- Ensure vacuum lines are reconnected in the correct orientation
- Secure the mounting bolt(s) to factory torque specifications
- Reconnect the electrical connector until it clicks
Pro Tip: No ECU reflash is required for stock applications, but we recommend checking your wastegate actuator function after installation.
🔌 Plug & Play Installation
- Direct plug-and-play with factory Subaru electrical connector
- No wiring modification required
- Fully compatible with OEM ECU and aftermarket tunes
- Simple install with basic hand tools
OEM vs Aftermarket Comparison
Feature
OEM Solenoid
Our Premium Solenoid
Improvement
Flow Rate
Base Reference
+15% Increased Flow
15% Higher Flow
Response Time
12-15ms
<10ms
20-30% Faster
Heat Resistance
Up to 115°C
Up to 125°C
8.7% Higher
Durability
~350,000 cycles
>1,000,000 cycles
3x Longer Life
Seal Material
Standard Rubber
Viton
Superior Chemical Resistance
Body Construction
Cast Aluminum
Machined Anodized Aluminum
Higher Precision
Boost Consistency
Degrades Over Time
Maintains Performance
More Reliable Long-Term
Our Electronic Boost Solenoid is a precision-engineered aftermarket replacement specifically designed for 2002-2007 Subaru turbo models. This solenoid improves boost response, enhances turbo performance, and provides superior durability compared to OEM solenoids.
Technical Specifications
Vehicle Compatibility
- 2002-2007 Subaru Impreza WRX
- 2004-2007 Subaru Impreza WRX STI
- 2005-2006 Subaru Legacy GT
- 2004-2007 Subaru Forester XT
- Compatible with stock and mild aftermarket turbo systems
- Works with factory and aftermarket ECU tunes
Performance Features
- Direct OEM replacement with performance improvements
- 15% higher flow rate compared to stock solenoids
- Improved boost response and reduced turbo lag
- Enhanced durability for high-boost applications
- Superior heat dissipation for consistent performance
- Optimized internal port design for smoother airflow
- Tested to over 1 million cycles for maximum reliability
- Perfect for both stock and modified applications

Installation Guide
Installation is straightforward and can be completed in under 30 minutes with basic hand tools:
- Locate the factory boost solenoid on the intake manifold near the throttle body
- Removal of intercooler may be required for easier access
- Disconnect the electrical connector by pressing the tab and pulling gently
- Disconnect the vacuum lines, taking note of their orientation
- Remove the mounting bolt(s) securing the solenoid
- Install the new solenoid in the reverse order
- Ensure vacuum lines are reconnected in the correct orientation
- Secure the mounting bolt(s) to factory torque specifications
- Reconnect the electrical connector until it clicks
Pro Tip: No ECU reflash is required for stock applications, but we recommend checking your wastegate actuator function after installation.
🔌 Plug & Play Installation
- Direct plug-and-play with factory Subaru electrical connector
- No wiring modification required
- Fully compatible with OEM ECU and aftermarket tunes
- Simple install with basic hand tools
OEM vs Aftermarket Comparison
| Feature | OEM Solenoid | Our Premium Solenoid | Improvement |
|---|---|---|---|
| Flow Rate | Base Reference | +15% Increased Flow | 15% Higher Flow |
| Response Time | 12-15ms | <10ms | 20-30% Faster |
| Heat Resistance | Up to 115°C | Up to 125°C | 8.7% Higher |
| Durability | ~350,000 cycles | >1,000,000 cycles | 3x Longer Life |
| Seal Material | Standard Rubber | Viton | Superior Chemical Resistance |
| Body Construction | Cast Aluminum | Machined Anodized Aluminum | Higher Precision |
| Boost Consistency | Degrades Over Time | Maintains Performance | More Reliable Long-Term |
Shipping and Delivery
Shipping and Delivery
Review our Shipping Policy for delivery details, shipping costs and exclusions.
Warranty and Support
Warranty and Support
Return and Refund
Return and Refund
Eligibility, exclusions, applicable fees and exceptions are detailed in our Return Policy. Restrictions apply to special-order and custom products.
Proposition 65
Proposition 65
Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov
