Audi A8 D5 2017-2022 Aftermarket Speed Limiter Kit

Vehicle Specific Speed Limiter for Audi A8 D5 2017-2022

Introducing our advanced Speed and RPM Limiter System, a cutting-edge solution engineered to elevate road safety and enhance operational control, designed to work seamlessly with 99% of road vehicles including electric vehicles (EVs). Our state-of-the-art technology ensures precise speed and RPM control, providing a reliable and efficient means to manage vehicle speeds.

Key Features:

  • Precision Control: Maintain optimal speed and RPM levels with our integrated limiter system, contributing to safer road conditions and efficient engine performance for electric vehicles.
  • Customizable Settings: Tailor the limiter parameters to suit specific requirements, providing flexibility for diverse electric vehicle fleets.
  • Enhanced Safety: Prioritize road safety with our integrated limiter system, minimizing the potential for speeding-related incidents and engine strain in electric vehicles.
  • Acceleration Control: Implement precise acceleration control for smoother driving experiences, reducing energy consumption and wear on electric vehicle components.
  • Easy Integration: Effortlessly integrate our limiter system into your fleet, ensuring a hassle-free implementation process.

Upgrade your electric vehicle fleet management strategy with our Speed and RPM Limiter System – a smart investment in safety, efficiency, and operational control. Drive with confidence, knowing that you are in control of your vehicles’ speeds, RPM, and acceleration, promoting a secure and responsible driving environment.

Installation – what to expect:

  • Average installation time – 2 hours
  • Physical accessibility –  Relatively easy
  • Wiring accessibility –   Access to connections a little challenging
  • Setup –  No setup necessary, just a short road test to check functionality.


If there is an OEM cruise control installed, a device is required to prevent overspeeding when active.
The setup module is required to complete an installation, only one is required for multiple installations.
Required In order to change the set speed limit - advised for installation
We can set this for you or it can be done via the programming lead. If the vehicle includes an OEM cruise control we advise having the programming lead.
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Vehicle Specific Speed Limiter for Audi A8 D5 2017-2022

What’s included in the box:

  • Speed Limiter computer
  • Computer wiring loom – for power and vehicle speed pulse, brake switch, clutch switch.
  • T-Harness – plug in connection to the throttle pedal

What’s included in the box:

  • Speed Limiter computer: This computer is pre-programmed specifically for your vehicle, ensuring compatibility and optimal performance.
  • Computer wiring loom: This wiring loom provides power to the speed limiter computer and connects to your vehicle’s speed pulse, brake switch, or CANBUS connection. It ensures seamless integration of the speed limiter system with your vehicle’s existing electronics.
  • T-Harness: The T-harness is a plug-in connection to the throttle pedal. It allows the speed limiter system to control the throttle and prevents over speeding for a comfortable and stress-free driving experience.

General installation process

The installation process for a speed limiter system usually takes around 1-2 hours, depending on the make, model, and year of the vehicle. Some vehicles may require more time due to physical and electronic accessibility issues.

To install the system, you’ll need to remove the knee-trim to access the area under the dashboard. You’ll then need to use soldered joints to connect the +15 and CANBUS connections. Unplug the throttle pedal connector and place the T-harness inline. Connect the other end of the T-harness to the cruise computer. Once the hardware installation is complete, temporarily install the setup module to the wiring loom and complete the setup procedure. The information needed to communicate with the vehicle is pre-installed by Conrad Anderson, and the setup procedure allows the speed limiter to react to the vehicle speed via the throttle pedal interface.

The static setup procedure for speed limiter installation requires a single operation: The pedal setup involves calibrating the speed limiter to learn the throttle pedal signals of the specific vehicle. This is done by pressing the set button on the command module and then gradually pressing down on the throttle pedal until it reaches its maximum position. The speed limiter then learns the range of signals from the pedal and stores them for limiting the vehicle speed.

After completing the pedal setup, it is recommended to take the vehicle on a short drive to test the speed limiter and ensure that it is working correctly.

Will the aftermarket speed limiter affect my vehicle warranty?

No. Conrad Anderson supplies and installs speed limiters for most of the main dealerships in the UK, covering the vast majority of vehicle manufacturers. We recommend that the installation is completed by an auto electrician just to put the installation beyond question. Any issue believed to be linked to the speed limiter installation can be proved one way or the other by removing the fuse from the main cruise computer wiring loom and removing the T-Harness from the pedal.

Tools required for installation

  • Soldering iron & Solder
  • Multimeters
  • Side cutters
  • Wire strippers
  • Specialist torx and other bits usually required to remove vehicle trim.
  • Knife
  • General screwdrivers and spanners
  • Work lamp

Skills required

Installing a speed limiter is very similar to installing a vehicle alarm system. See the general installation process above for an idea of what is involved – the main requirements are:

  • Remove & Refit vehicle trim
  • Soldering electrical joints
  • Basic 12v electrics – Using voltage meters to locate 12v switching wires
  • Routing cables away from moving parts

Vehicle Changeover year

Vehicles manufactured or registered around a changeover year will need to be looked at in detail to make sure the correct version of the speed limiter is selected. If your vehicle is 2007 and listed in our website product description as 2007-2011, there could be a difference in the specification – this could be down to the following possibilities:

  • A 2007 registered vehicle could be a 2006 (or earlier) build year.
  • Vehicle manufacturers sometimes use ‘hybrid’ throttle pedal solutions between model changes, the vehicle may look the same but have different throttle pedal connections.

To check which speed limiter is correct, look at the throttle pedal connection on the vehicle and compare it with the T-Harness connections on the product photo above.

Conrad Anderson offer trade discounts for bulk orders and an installation service for fleets of any size, if you wish to mkae an enquiry please contact us on 01212470619, email or fill in the enquiry form above

Additional information

Weight 0.7 kg
Dimensions 23.5 × 16 × 7 cm

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