Unlock Your Subaru Impreza’s True Potential: A Step-by-Step Guide to Disconnecting AVS for a Boost in Performance!

If you’re a car enthusiast or a DIY mechanic, you may be familiar with the active vehicle stability system (AVS) in your Subaru Impreza. The AVS enhances your vehicle’s stability and safety by constantly monitoring and adjusting the brakes and power distribution to each wheel, keeping your ride smooth and controlled. However, if you’re looking for a more performance-oriented driving experience, you might want to consider disconnecting AVS. In this article, we’ll guide you through the steps of removing the AVS from your Subaru Impreza and help you unleash its true potential!

What is AVS, and Why Disable it?

AVS, also known as electronic stability control, is a system that detects and corrects any loss of traction or stability. It works by measuring the steering angle, vehicle speed, and lateral acceleration to adjust the brake pressure and throttle position to keep the car stable. While this technology is excellent for preventing accidents, it also limits your car’s performance, especially if you’re into car tuning or racing. By disconnecting AVS, you can disable the electronic aids and gain more control and responsiveness on the road.

Step by Step Guide to Disconnecting AVS on Subaru Impreza

Before we start, please note that the AVS system is designed to enhance your safety, and disabling it can affect your car’s stability and handling. We recommend disconnecting AVS only if you’re confident in your driving skills and understand the risks involved.

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Here’s a step-by-step guide to disconnecting AVS on Subaru Impreza:

Step 1: Turn off your car and remove the negative battery cable to avoid any electrical shock or damage.

Step 2: Locate the AVS control unit, which is usually located under the dashboard, near the center console.

Step 3: Remove the AVS control unit from the mounting bracket, using a screwdriver or a wrench.

Step 4: Disconnect the wiring harness from the AVS control unit by pushing down on the tab and gently pulling the connector out.

Step 5: Connect the wiring harness to the AVS bypass module, which replaces the AVS control unit. The AVS bypass module is a plug-and-play device that emulates the AVS signals.

Step 6: Mount the AVS bypass module on the same mounting bracket as the AVS control unit, using the same screws or bolts.

Step 7: Reconnect the negative battery cable and turn on your car to test the AVS bypass module.

Risks and Drawbacks of Disconnecting AVS

While disconnecting AVS can improve your car’s performance, it’s essential to be aware of the potential risks and drawbacks. Without AVS, your car’s stability and safety may be compromised, especially in wet or slippery conditions. Your car may also be more prone to oversteer or understeer, making it challenging to control under hard acceleration or sudden braking. Additionally, disconnecting AVS can void your car’s warranty and may not be street legal in some areas.

Frequently Asked Questions

Q: Is it legal to disconnect AVS on Subaru Impreza?
A: The legality of disconnecting AVS varies by state or country. Some jurisdictions require vehicles to have electronic stability control as a safety requirement. Check your local laws before removing AVS.

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Q: Can disconnecting AVS improve my car’s performance?
A: Yes, disconnecting AVS can improve your car’s performance by giving you more control and responsiveness. However, it’s essential to balance the trade-off between performance and safety.

Q: What’s the difference between AVS and VDC on my Subaru Impreza?
A: AVS is a component of the vehicle dynamics control (VDC) system in your Subaru Impreza. VDC includes multiple safety features, such as antilock brakes, traction control, and stability control, to keep your vehicle stable and secure on the road.


In conclusion, disconnecting AVS on your Subaru Impreza is a viable option if you want to enhance your car’s performance. However, it’s crucial to weigh the benefits and risks of removing AVS and make an informed decision. If you’re not confident in your ability to disconnect AVS, we recommend seeking professional help or leaving the AVS intact. Happy tuning!

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Peter Banks

With years of experience as a professional mechanic and Subaru specialist, Peter is one of the most respected members of our team. He's written several articles on Subaru maintenance and repair, and his advice and tips are always practical and helpful. When he's not working on cars, he enjoys cooking and trying out new recipes.

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