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The AEM Tru-Boost is a popular boost controller for Subaru STI enthusiasts looking to enhance their vehicle’s performance. This guide will provide a step-by-step installation process for setting up the AEM Tru-Boost at 1.8 bar. Follow these instructions carefully to ensure a successful installation.
Tools and Materials Needed
- AEM Tru-Boost Controller Kit
- Wire Strippers
- Electrical Tape
- Screwdrivers (Phillips and Flathead)
- Socket Wrench Set
- Boost Pressure Source (T-fitting)
- Vacuum Hose
- Zip Ties
Step 1: Preparation
Before starting the installation, ensure that your vehicle is parked on a level surface and the engine is cool. Disconnect the negative battery terminal to prevent any electrical issues during the installation.
Step 2: Mounting the Tru-Boost Controller
Choose a suitable location for mounting the AEM Tru-Boost controller. Common locations include the dashboard or center console. Ensure the controller is easily accessible for adjustments.
Use the mounting bracket provided in the kit to secure the controller in place. Mark the holes for drilling, then use a drill to create the necessary holes. Attach the bracket using screws and ensure it is firmly secured.
Step 3: Connecting the Wiring
Locate the wiring harness included with the AEM Tru-Boost kit. Connect the power wires to a switched power source in the vehicle, such as the ignition or fuse box. Make sure to use wire strippers to prepare the wires for connection.
Connect the ground wire to a suitable grounding point on the vehicle’s chassis. This ensures that the Tru-Boost controller has a solid ground connection for optimal performance.
Step 4: Installing the Boost Pressure Source
The AEM Tru-Boost requires a boost pressure source to function correctly. Locate a suitable vacuum line on the intake manifold. Cut the line and install a T-fitting to allow the boost controller to tap into the pressure source.
Connect the supplied vacuum hose from the T-fitting to the boost pressure input on the Tru-Boost controller. Ensure all connections are secure to prevent any boost leaks.
Step 5: Final Connections and Setup
Once all wiring and vacuum connections are complete, double-check each connection for security. Reconnect the negative battery terminal to restore power to the vehicle.
Start the engine and allow it to idle. Check for any leaks around the vacuum connections. If everything appears to be functioning correctly, proceed to set the desired boost level on the Tru-Boost controller.
Step 6: Setting the Boost Level
With the engine running, use the Tru-Boost controller to set the boost level to 1.8 bar. Follow the manufacturer’s instructions for adjusting the settings. Monitor the boost gauge to ensure the desired level is achieved.
Step 7: Testing and Calibration
After setting the boost level, take the vehicle for a test drive. Monitor the boost levels and engine performance. If necessary, make further adjustments to the Tru-Boost controller to fine-tune the boost settings for optimal performance.
Conclusion
Installing the AEM Tru-Boost for your Subaru STI at 1.8 bar can significantly enhance your vehicle’s performance. By following these step-by-step instructions, you can ensure a successful installation and enjoy the benefits of improved boost control.