Where to Tap AEM AFR Gauge in Subaru WRX 2013: A Comprehensive Guide

If you own a Subaru WRX 2013, you know that it’s a powerful and reliable car. However, to get the most out of your vehicle, you need to monitor its air/fuel ratio (AFR) accurately. One way to do this is by installing an AEM AFR gauge, which is a popular choice among car enthusiasts. In this article, we’ll show you where to tap the AEM AFR gauge in your Subaru WRX 2013, so you can get the most accurate readings possible.

Key Takeaways

  • An AEM AFR gauge is an essential tool for monitoring your car’s air/fuel ratio.
  • Installing the gauge in your Subaru WRX 2013 requires tapping into the oxygen sensor signal wire.
  • The best location to tap into this wire is at the ECU, which is located under the dash on the passenger side.
  • You can install the AEM AFR gauge in either the A-pillar or the dashboard, depending on your preference.

Now, let’s dive into the details and learn how to install your AEM AFR gauge in your Subaru WRX 2013.

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Step-by-Step Guide

Step 1: Gather the necessary tools

Before you begin installing your AEM AFR gauge, make sure that you have all the necessary tools:

  • AEM AFR gauge
  • Wire strippers
  • Crimping tool
  • Electrical tape
  • 12-volt test light
  • Phillips screwdriver
  • Socket wrench set
  • Drill and drill bits
  • Zip ties
  • Heat shrink tubing

Step 2: Locate the ECU

The first step in installing your AEM AFR gauge is to locate the ECU, which is located under the dash on the passenger side. To access the ECU, you’ll need to remove the kick panel and the carpeted panel below it. Once you’ve done this, you should see the ECU mounted on the metal bracket.

Step 3: Tap into the oxygen sensor signal wire

The next step is to locate the oxygen sensor signal wire, which is located at pin 19 on the ECU connector. You can use a wiring diagram to identify the correct wire or use a 12-volt test light to test each wire until you find the one that carries the oxygen sensor signal. Once you’ve located the correct wire, use your wire strippers to strip about 1/4 inch of insulation from the wire.

Step 4: Connect the AEM AFR gauge

Now that you’ve located and stripped the oxygen sensor signal wire, you’re ready to connect the AEM AFR gauge. Begin by crimping a wire tap connector onto the stripped wire, then connect the AEM AFR gauge signal wire to the tap connector. Cover the connection with electrical tape, and use zip ties to secure the wires in place.

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Step 5: Install the AEM AFR gauge

Finally, it’s time to install the AEM AFR gauge in your Subaru WRX 2013. You have two options: you can mount it on the A-pillar or the dashboard. Mounting the gauge on the A-pillar provides a clean and seamless look, while mounting it on the dashboard allows for easier viewing. Whichever option you choose, make sure to drill holes for the gauge and secure it in place using screws and brackets.

Congratulations! You’ve successfully installed your AEM AFR gauge in your Subaru WRX 2013.

Frequently Asked Questions

Q: What does an AEM AFR gauge do?

An AEM AFR gauge monitors the air/fuel ratio of your car’s engine. This is important because the air/fuel ratio can affect your car’s performance, fuel efficiency, and emissions.

Q: What is the best location to tap into the oxygen sensor signal wire?

The best location to tap into the oxygen sensor signal wire is at the ECU, which is located under the dash on the passenger side.

Q: Can I install the AEM AFR gauge myself?

Yes, you can install the AEM AFR gauge yourself. However, if you’re not comfortable working with electrical wiring, it’s best to have a professional install it for you.

Q: Is the AEM AFR gauge compatible with other Subaru models?

Yes, the AEM AFR gauge is compatible with other Subaru models, but the installation process may vary depending on the model. Be sure to check the manufacturer’s instructions for specific installation instructions.

Conclusion

Installing an AEM AFR gauge in your Subaru WRX 2013 is a great way to monitor your car’s air/fuel ratio and get the most out of your vehicle’s performance. By tapping into the oxygen sensor signal wire at the ECU and installing the gauge in either the A-pillar or dashboard, you can get accurate and real-time readings of your car’s air/fuel ratio. Use this guide to install your AEM AFR gauge with confidence and enjoy the benefits of having a well-tuned engine.

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Joseph Weaver

With a background in engineering and a passion for cars, Joseph brings a unique perspective to our blog. He's particularly interested in the technology and innovation behind Subaru's advanced safety features, and his articles on this topic are always insightful and informative. When he's not writing, he enjoys playing video games and spending time with his family.

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