Table of Contents
The AEM throttle body installation on a Subaru WRX can significantly enhance your vehicle’s performance, offering a boost of up to 14 horsepower. This step-by-step guide will walk you through the installation process, ensuring a smooth upgrade for your WRX.
Tools and Materials Needed
- AEM throttle body kit
- Socket set
- Torque wrench
- Flathead screwdriver
- Phillips screwdriver
- Vacuum hose (if necessary)
- Throttle body cleaner
- Shop towels
Preparation
Before starting the installation, ensure that your vehicle is parked on a level surface and the engine is cool. Gather all necessary tools and materials to streamline the process.
Step 1: Disconnect the Battery
To prevent any electrical issues, disconnect the negative terminal of the battery. This step is crucial for safety during the installation process.
Step 2: Remove the Engine Cover
Using a socket set, remove the bolts securing the engine cover. Carefully lift the cover off and set it aside.
Step 3: Remove the Intake Manifold
Next, disconnect any electrical connectors and vacuum hoses attached to the intake manifold. Use your socket set to remove the bolts securing the manifold, then gently lift it off.
Step 4: Remove the Stock Throttle Body
With the intake manifold removed, locate the stock throttle body. Disconnect the throttle position sensor and the accelerator cable. Remove the bolts holding the throttle body in place and take it out.
Step 5: Prepare the AEM Throttle Body
Before installation, clean the mating surfaces of the AEM throttle body and the intake manifold using throttle body cleaner and shop towels. This ensures a proper seal and optimal performance.
Step 6: Install the AEM Throttle Body
Position the AEM throttle body onto the intake manifold. Secure it in place with the bolts, tightening them to the manufacturer’s specifications using a torque wrench. Reconnect the throttle position sensor and accelerator cable.
Step 7: Reinstall the Intake Manifold
Carefully place the intake manifold back onto the engine. Reattach all electrical connectors and vacuum hoses that were disconnected earlier. Secure the manifold with the bolts, ensuring they are tightened to the proper specifications.
Step 8: Reattach the Engine Cover
Once everything is securely in place, reattach the engine cover using the bolts you removed earlier. Make sure it is fitted correctly.
Step 9: Reconnect the Battery
Reconnect the negative terminal of the battery. Ensure it is tightened securely to prevent any electrical issues.
Step 10: Test the Installation
Start the engine and let it idle for a few minutes. Check for any unusual sounds or leaks. Take your WRX for a test drive to experience the improved performance.
Conclusion
Installing an AEM throttle body on your Subaru WRX is a straightforward process that can yield significant performance benefits. By following these steps, you can achieve a boost of up to 14 horsepower and enhance your driving experience.