Installation Guide: How to Fit a Greddy Profec B Spec Ii Boost Controller in Your Subaru Wrx

Installing a Greddy Profec B Spec II boost controller in your Subaru WRX can significantly enhance your vehicle’s performance. This guide will walk you through the steps needed to properly install this boost controller, ensuring optimal performance and reliability.

Tools and Materials Needed

  • Greddy Profec B Spec II Boost Controller
  • Socket set
  • Wire strippers
  • Electrical tape
  • Zip ties
  • Multimeter
  • Vacuum hose
  • Basic hand tools

Preparation Steps

Before starting the installation, ensure your vehicle is parked on a flat surface, and the engine is cool. Disconnect the battery to prevent any electrical short circuits during the installation process.

Locate the Boost Source

Identify a suitable boost source for your boost controller. This is typically done by tapping into the vacuum line that leads to the factory boost sensor. Ensure that the line is clean and free of any debris.

Remove the Factory Boost Control Solenoid

Remove the factory boost control solenoid from its mounting location. This may require the use of a socket set. Carefully detach any electrical connectors and vacuum lines connected to the solenoid.

Installing the Greddy Profec B Spec II

Mounting the Controller

Choose a suitable location to mount the Greddy Profec B Spec II controller. This could be on the dashboard or center console where it is easily visible. Use the provided mounting hardware to secure the unit in place.

Wiring the Controller

Follow the wiring diagram provided with your Greddy Profec B Spec II. Connect the power and ground wires to a suitable source in your vehicle. Use wire strippers to prepare the wire ends, and secure connections with electrical tape.

Connecting the Boost Source

Connect the boost source line from the vacuum hose to the Greddy Profec B Spec II. Ensure that the connection is tight to prevent any leaks. Use zip ties to secure the vacuum hose in place, keeping it away from hot engine components.

Connecting the Solenoid

Connect the Greddy solenoid to the controller. This will typically involve connecting two wires from the controller to the solenoid, following the instructions provided. Ensure that all connections are secure.

Final Steps

Reconnecting the Battery

Once all connections are made, reconnect the battery. Double-check all wiring and connections to ensure everything is secure and correctly installed.

Testing the Installation

Start the engine and allow it to warm up. Test the boost controller by adjusting the settings and observing the boost gauge. Ensure the controller is functioning correctly and making the desired adjustments to boost levels.

Troubleshooting Common Issues

If you encounter issues during the installation or testing phase, consider the following troubleshooting tips:

  • Check all electrical connections for tightness.
  • Ensure the vacuum lines are not kinked or damaged.
  • Verify the power source is functioning correctly.
  • Consult the user manual for specific error codes or troubleshooting steps.

Conclusion

Installing a Greddy Profec B Spec II boost controller in your Subaru WRX can greatly improve your vehicle’s performance. By following this guide, you can ensure a proper installation that will enhance your driving experience. Always remember to consult the manufacturer’s instructions for specific details and safety precautions.