What is the difference Alientech Kess3 Slave and Kess3 Master

What is the difference between Alientech Kess 3 Slave and Kess 3 Master? Most people who are interested in tuning and ECU remapping will be thinking just this. You may be searching for the first time for tuning tools and software. As you will know, you have a variety of options. And there are many things to consider.

  1. Which tuning tool is best?
  2. What vehicles can it be used on?
  3. How much does it cost?
  4. Is there a hidden charge?
  5. What if I have a car that isn’t on the list?
What is the difference Alientech Kess Slave and Kess Master

There are, of course, many other questions as well. So what is the difference Alientech Kess 3 Slave and Kess 3 Master?

We are frequently asked this question. From many perspectives, it is hard to tell the difference between the Kess 3 salve tuning tool and the Kess 3 master. Both tools have the same appearance. In addition, the connectors and cables are identical on both tools. The protocol options that are available for both Kess master and Kess slave are identical. So there are very few differences it would seem on first inspection.

So Alientech Kess Master vs. Alientech Kess Slave: What’s the difference?

Open Tuning Files


One important difference between Kess Master and Alientech Kess 3 Slave is that Kess 3 Master can read open files. Therefore, the master tool reading data from the vehicle does not encrypt the data. You can therefore edit the software. It is therefore possible for you to create your own tuning file if you wish. Or for a new file, you can send it to any tuner to do this for you


Slave tuning tools read the original software from a vehicle that cannot be accessed. Typically, such files are encrypted and protected. It is not possible to access the data read from the vehicle. Tuning files must be sent to your “master” in order to be de-coded for loading on your vehicle. For each salve tool, only one master is allowed. He or she supplies it with new software.
Alientech Kess 3 remapping
Alientech Kess 3

Alientech Upgrade to Master

Can a Slave Alientech Kess 3 tuning tool be upgraded to a master tool?

The answer is yes! Just because you purchased your tool as a slave tool doesn’t mean you must keep it that way. It is possible to achieve Master status by paying the difference between Save and Master prices. This is the price difference between the sale tool and the master price.  If the master agrees, the upgrade can take place. Some masters, however, are not open to this change.

Alientech Move a Slave Kess 3

Can a Kess3 Slave tool move from one master to another?  

The Alientech Kess3 Slave can theoretically move to another file provider if you’re unhappy with your current one. Here’s the problem… The catch is… approval has to come from your current file provider. If you ask, most Alientech sellers will not allow you to move a tool. It is important that you discuss this question with anyone you intend to buy a Kess tuning tool from.


Remap101 car tuning training, tools and software 

There is no company in Europe that sells more Alientech tuning systems than we do! We always have a large inventory on hand. We offer installation, setup, and training with our tuning tools. For the Kess, Alientech offers in-house or online tuning training. VIEZU and Remap101 offer worldwide support. Sales to international customers are tax-free, technical support is available online, and your order is straight to your door.


Where to Purchase Alientech Kess3  tuning tools

You can see the Alientech tuning tools and tuning software in the Remap101 shop here. https://www.remap101.co.uk/product-category/professional-tuning-tools/

And the Alientech Kess3 tuning tool specifically can be found here: https://www.remap101.co.uk/product-category/professional-tuning-tools/alientech-kess3/

If you have any questions, please mail info@viezu.com