How to install a Blow Off Valve on your Subaru (With sound examples)

Introduction

This tutorial provides a step-by-step guide on how to install a Blow Off Valve (BOV) on your Subaru, specifically demonstrating the installation of a GFB Respons on a MY09 Forester XT. The BOV enhances your vehicle's performance by releasing pressure from the intake system, improving turbo response and sound. This guide will help you understand the installation process and provide sound examples to showcase the valve's various settings.

Step 1: Gather Required Tools and Materials

Before starting the installation, ensure you have the following tools and materials ready:

• GFB Respons Blow Off Valve
• Socket set (including 10mm and 12mm sockets)
• Screwdriver set
• Pliers
• Teflon tape (for sealing)
• Vacuum hose (if needed)
• Safety glasses and gloves

Practical Tips

• Work in a well-lit area to see clearly.
• Wear safety glasses to protect your eyes during installation.

Step 2: Remove the Factory Recirculation Valve

1. Locate the Recirculation Valve: Find the factory valve on your Subaru, typically near the turbocharger.
2. Disconnect Electrical Connections: Carefully unplug any electrical connectors attached to the valve.
3. Remove Vacuum Hoses: Gently pull off any vacuum hoses connected to the valve.
4. Unscrew the Valve: Use the socket set to remove the bolts securing the valve in place. Keep the bolts for reinstallation.

Common Pitfalls

• Be cautious when removing hoses to avoid damaging them.
• Ensure you remember the order of disconnection for reinstallation.

Step 3: Install the GFB Respons Blow Off Valve

1. Prepare the New Valve: If necessary, apply Teflon tape to the threads of the new BOV for a better seal.
2. Attach the Valve: Position the GFB Respons BOV where the factory valve was located.
3. Secure with Bolts: Use the previously removed bolts to secure the BOV in place. Tighten them evenly to avoid any leaks.
4. Reconnect Hoses: Re-attach any vacuum hoses you removed earlier to the appropriate ports on the new valve.

Practical Advice

• Ensure all connections are tight to prevent leaks.
• Refer to the valve’s manual for specific installation details unique to your model.

Step 4: Reconnect Electrical Connections

1. Plug in the Electrical Connector: Reconnect any electrical connections you previously unplugged.
2. Double-Check Connections: Ensure all connections are secure and correctly positioned.

Step 5: Test the Blow Off Valve

1. Start the Engine: Turn on your vehicle and let it idle for a moment.
2. Listen for Sounds: Rev the engine and listen for the characteristic sound of the BOV releasing pressure. Adjust the valve settings if your model allows it for different sound profiles.

Sound Examples

• The video provides sound samples of the BOV in different settings, which can help you choose your preferred sound.

Conclusion

Installing a Blow Off Valve on your Subaru can enhance both performance and driving enjoyment. By following this tutorial, you should now have a better understanding of how to remove the factory valve and install the GFB Respons BOV. Make sure to test the valve after installation and enjoy the new sound and performance benefits. For further customization, consider experimenting with different settings as outlined in the video.