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Tomioka Racing (TR)

TR 3-Port Electronic Boost Solenoid for Subaru STi 2004-2007/ WRX 2006-2007

TR 3-Port Electronic Boost Solenoid for Subaru STi 2004-2007/ WRX 2006-2007

$259.00 CAD
$209.00 CAD $259.00 CAD
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(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
Gen 1 Boost Response Comparison Chart
Installation Guide

Installation is straightforward and can be completed in under 30 minutes with basic hand tools:

  1. Locate the factory boost solenoid on the intake manifold near the throttle body
  2. Removal of intercooler may be required for easier access
  3. Disconnect the electrical connector by pressing the tab and pulling gently
  4. Disconnect the vacuum lines, taking note of their orientation
  5. Remove the mounting bolt(s) securing the solenoid
  6. Install the new solenoid in the reverse order
  7. Ensure vacuum lines are reconnected in the correct orientation
  8. Secure the mounting bolt(s) to factory torque specifications
  9. 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
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