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How do you remove the speed limiter on a Supra?

If you own a Toyota Supra, you may have noticed that the vehicle comes equipped with a speed limiter that restricts its top speed. While this feature is designed to improve safety and fuel efficiency, some drivers may want to remove the speed limiter to unleash the full potential of their Supra. In this article, we'll provide a detailed, step-by-step guide on how to remove the speed limiter on a Supra.


Understanding the Speed Limiter


The speed limiter on a Supra is a safety feature that prevents the vehicle from exceeding a certain top speed, typically around 155 mph (250 km/h). This is done to comply with local regulations and to ensure the vehicle's stability and handling at high speeds. However, for some enthusiasts, the speed limiter can be a frustrating limitation that prevents them from fully enjoying the Supra's performance capabilities.


Steps to Remove the Speed Limiter



  • Obtain the necessary tools and equipment: You'll need a diagnostic tool, such as an OBD2 scanner, and a computer with the appropriate software to interface with the Supra's electronic control unit (ECU).

  • Locate the speed limiter setting in the ECU: Using the diagnostic tool and software, navigate to the section of the ECU that controls the speed limiter. This may vary depending on the specific model and year of your Supra.

  • Disable or modify the speed limiter setting: Once you've located the speed limiter setting, you can either disable it entirely or increase the top speed limit to your desired level. This process may require some technical knowledge and should be done with caution.

  • Verify the changes: After making the necessary changes, test the vehicle's top speed to ensure that the speed limiter has been successfully removed or modified.


It's important to note that removing the speed limiter may have legal and safety implications, and it's crucial to ensure that you comply with all local laws and regulations. Additionally, driving at high speeds can be dangerous and should be done with extreme caution and on appropriate roads or tracks.


Considerations and Precautions


Before attempting to remove the speed limiter on your Supra, there are a few important considerations and precautions to keep in mind:



  • Legal implications: Ensure that removing the speed limiter is legal in your area and that you're aware of any potential consequences.

  • Safety concerns: Driving at high speeds can be risky and should only be done on appropriate roads or tracks, with proper safety equipment and precautions.

  • Warranty and insurance: Modifying the vehicle's ECU may void the manufacturer's warranty and affect your insurance coverage, so it's essential to research the potential implications before proceeding.

  • Technical expertise: Removing the speed limiter requires a certain level of technical knowledge and expertise. If you're not comfortable with the process, it's best to seek the assistance of a qualified automotive technician.


By following the steps outlined in this article and considering the potential risks and implications, you can successfully remove the speed limiter on your Toyota Supra and unleash the full power of this iconic sports car. However, it's crucial to prioritize safety and legality throughout the process.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.