How to Unlock Your Vehicle’s Top Speed (V-Max) with VCDS
Tired of electronic speed limits on your vehicle? Would you like to unleash your engine’s full potential by increasing its maximum speed? With VCDS (VAG-COM), you can do it yourself, but be careful.
Introduction
Electronic speed limits can be frustrating for drivers who want to take full advantage of their vehicle’s performance, on the racetrack or Autobahn for example. This tutorial will guide you through the steps involved in modifying the electronic flange on your engine ECU, enabling you to increase the maximum speed allowed.
Initial Precautions
Before you start, bear in mind that this operation may affect the safety and legality of your driving. Do so at your own risk. Make sure you have a compatible VCDS cable and a basic knowledge of how to use it.
If the procedure doesn’t work on your vehicle despite the tutorial, the vmax must be modified in the engine mapping via engine reprogramming by an auto tuner/reprogrammer.
-> VCDS: Operation and use
-> VCDS: Checking mileage
-> VCDS: Reset / Reset DSG
2 tutorials are available, for MQB vehicles and for TDI diesel vehicles with EDC15 / EDC16 ECUs.
For other vehicles, the maximum speed has to be modified in the engine mapping via engine reprogramming – impossible with VCDS!
Modifying VMAX for MQB vehicles
(VW Golf 7, Passat B8, Audi A3 8V, Seat Leon 5F, Skoda Octavia 3 …)
Proceed :
1 – Engine off, ignition off, connect your official VAG-COM VCDS cable to the computer, then plug the other end into your vehicle’s diagnostics socket.
2 – Switch on the ignition and run the VCDS program.
Line 1:
3 – Click on“Select”, then click on“01 – Motor”.
4 – Click on“Security Access – 16” then enter the code “27971”.
5 – Click on “Adaptation – 10”.
6 – On this page, at the very top, there is a drop-down menu.
In this drop-down menu, choose “Individually adjustable top speed limit”.
7 – On this same page, you’ll find a second menu at the bottom of the page.
On this menu, select the maximum speed in km/h (example: 300) then validate.
Modifying VMAX for TDI EDC15 and EDC16 diesel vehicles
This operation allows you to view and modify the value of the maximum speed authorized by the engine ECU.
Applies only to TDI EDC15 and EDC16 diesel engines.
Golf 5, A3 8P, Leon 2, A4 B7, Passat B6, 1.9 TDI, 2.0, 2.5, 2.7, 3.0 TDI before 2010
Step 2: Accessing the Engine Computer
1 – Engine off, ignition off, connect your official VAG-COM VCDS cable to the computer, then plug the other end into your vehicle’s diagnostic socket.
2 – Switch on the ignition and run the VCDS program.
3 – Click on“Select”, then click on “01 – Motor”.
Step 3: Login and Modification
- For an EDC16 ECU, enter the login “12233” from “16 – Security Access”.
- For an EDC15 calculator, enter the login “12233” from “11 – Login”.
This login unlocks the specific adaptations and allows you to consult the current flange value.
Note: Your login is taken into account as soon as you receive a confirmation message.
This procedure must be carried out with care!
Step 4: Reading the Flange Value
- Depending on your ECU version, read the value of channel 18, 07 or 14 in “10 – Adaptation”.
- You should see the current value of the speed limit, often set at 190 km/h.
Step 5: Modify Flange Value
- If you wish to increase the maximum speed, enter the login corresponding to the channel where the flange is located.
- To modify this value, you must first enter the login: 20973 for those who have the flange value in channel 18.
- Or login: 28575 for those who have the flange value in channel 07
- Enter Login from 16 – Security Access or 11 – Login depending on your calculator.
- Modify the bridle value by increasing the limit. In some cases, you won’t be able to exceed 250 km/h (see 300 km/h).
ATTENTION: don’t play with this value at this stage. With this first login, you can only lower the limiter value. So if you lower it and the other logins don’t work, you could be locking up your vehicle for good!
PLEASE DO NOT lower the speed OR YOU WILL NOT BE ABLE TO CHANGE IT! VAG Coding is not responsible for your modifications.
Example of compatible ECU: EDC15VM / EDC16U31 / EDC16U34 …
Example for the EDC16U34 1.9 TDI year 2009 the flange is 190 km/h and after login it increases to 250 km/h.
