How is an Alientech Kess3 Slave and Kess3 Master different 

How is an Alientech Kess3 Slave and Kess3 Master different

How is an Alientech Kess3 Slave and Kess3 Master different from each other. Its a common question for people looking to get into tuning and ecu remapping. For example, you may be considering tuning tools and software for the first time. There are quite a few options available. This is a lot to consider.

  1. What is the best tuning tool?
  2. What vehicles can I tune with it?
  3. What’s is the best price?
  4. Are there any hidden costs?
  5. Can I tune cars that don’t seem to be listed?
Alientech KESS3 Remap and Tuning Tool
Alientech KESS3 Remap and Tuning Tool
There are, of course, many other questions as well. So how is an Alientech Kess 3 Slave and Kess 3 Master different from each other. This is one of the most common questions we are asked.

It is hard to tell the difference between the Kess 3 salve tuning tool and the Kess master in many respects. The two tools look very similar. The cables and connectors are the same on both tools. In addition, both Kess slave and Kess master have the same protocol options that are available. These options do not differ.

Tuning applications, as well as vehicles that can be tuned and remapped, if they are the same. How does the Alientech Kess3 Master and Kess3 Slave differ from each other?

Alientech KESS3 Remap and Tuning Tool
Alientech KESS3 Remap and Tuning Tool

Open Tuning Files


Kess Master differs from Alientech Kess 3 Slave in one important way: it can read open files. Because of this, the data read from the vehicle by means of a master tool is not encrypted. As a result, the software can be edited by you. So if you wish, you can make a new tuning file for yourself. Or you can send it to any tuner anywhere on the planet for a new file.


A slave tuning tool reads the original software from a vehicle, which is not accessible. These are locked and encrypted files. There is no access to the read software. In order to load a modified tuning file onto your vehicle, you need to send the file to your “master”, and they will be able to de-code the file for you. There can only be one master for each salve tool. It is this master who supplies the device with new software.

Alientech Upgrade to Master

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

Yes, it is! You don’t necessarily have to keep your tool as a slave tool just because you bought it as a slave tool. Master status can be active by simply paying the difference between the Save and Master prices. In other words, the difference between the sale tool and master RRP.  In order to upgrade the tool, the master must agree.  However, not every master is open to this type of upgrade.

Alientech Move a Slave Kess 3

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

You can, in theory, move your Alientech Kess 3  slave to another file provider if you are unhappy with your current file provider. The problem is… But there’s a catch! You have to get permission from your current file provider. The majority of Alientech sellers will not permit a tool to  move if you ask. Because of this, you should discuss this question with anyone you are considering purchasing a Kess tuning tool from.

Alientech Kess3
Alientech Kess3

Paramount Performance Tuning 

We sell more Alientech tuning systems than any other company in Europe! Everything is always in stock and ready to go. All tuning tools sales include installation, set up and training. In-house or online tuning training is available from Alientech for the Kess. Paramount provides services around the world. TAX-free international sales, online tech support, and door-to-door shipping worldwide.

Where to Purchase Alientech Kess tuning tools

You can see the Alientech tuning tools and tuning software in the Paramount shop here : and the new Alientech Kess 3 can be found here

If you have any question, or need help and advice, please mail the team at 

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