Step-by-step Installing the Aem E85 Fuel System on a Subaru Brz: What to Expect

The AEM E85 fuel system is an excellent upgrade for Subaru BRZ owners looking to enhance performance. This article will guide you through the step-by-step installation process, detailing what to expect along the way.

Preparation Before Installation

Before diving into the installation, it’s essential to gather all necessary tools and materials. Proper preparation will ensure a smooth process.

  • AEM E85 Fuel System Kit
  • Basic hand tools (wrenches, screwdrivers, pliers)
  • Safety goggles and gloves
  • Fuel line disconnect tool
  • Torque wrench
  • Rags for spills

Step 1: Safety First

Before starting the installation, ensure that the vehicle is parked in a well-ventilated area. Turn off the ignition and disconnect the battery to avoid any electrical hazards.

Step 2: Remove the Stock Fuel System

Begin by relieving the fuel pressure in the system. Locate the fuel pump fuse in the fuse box and remove it. Start the engine and let it run until it stalls, indicating that the fuel pressure is relieved.

Next, disconnect the battery and remove the rear seat to access the fuel pump cover. Carefully unscrew the cover and disconnect the fuel lines using the fuel line disconnect tool.

  • Remove the fuel pump cover screws.
  • Disconnect the wiring harness from the fuel pump.
  • Carefully pull the fuel pump out of the tank.

Step 3: Install the AEM E85 Fuel Pump

Once the stock fuel pump is removed, it’s time to install the AEM E85 fuel pump. Begin by placing the new pump into the fuel tank, ensuring it sits properly in the designated area.

Reconnect the wiring harness and secure the pump in place. Make sure all connections are tight to prevent any fuel leaks.

Step 4: Install the New Fuel Lines

With the fuel pump installed, the next step is to replace the stock fuel lines with the new lines provided in the AEM kit. Carefully route the new lines to avoid any pinch points.

  • Secure the new fuel lines using the provided clamps.
  • Ensure that the lines are not in contact with any hot surfaces.
  • Double-check all connections for tightness.

Step 5: Reconnect the Battery and Test the System

After completing the installation of the fuel lines, reconnect the battery. Turn the ignition to the ‘on’ position without starting the engine. This will prime the fuel system and allow you to check for leaks.

Inspect all connections and lines for any signs of fuel leakage. If everything looks good, you can proceed to start the engine.

Step 6: Final Checks and Calibration

Once the engine is running, it’s crucial to perform final checks. Monitor the fuel pressure and ensure the engine is running smoothly. You may need to calibrate your engine management system to optimize performance with the new E85 fuel system.

  • Check the fuel pressure with a gauge.
  • Look for any unusual sounds from the engine.
  • Adjust the engine tuning as necessary.

Conclusion

Installing the AEM E85 fuel system on your Subaru BRZ can significantly enhance its performance. By following these steps carefully, you can ensure a successful installation and enjoy the benefits of increased power and efficiency.

Remember to always prioritize safety and double-check your work. Happy driving!