Original ALIENTECH Kess V3 vs. Kess V2 vs. Ktag

New KESS V3 is the new original Alientech ECU and TCU Programmer via OBD, Bench and Boot Mode all in a single tool. It combines Kess V2 and ktag into 1 tool, and will be a powerful tool that allows the READING and WRITING of the ECU found in Automobile, Motorcycle, Trucks, Agricultural Vehicles as well as Marine applications by simply connecting the supplied interface cable to the diagnostic port of the vehicle.

kess v3 vs kess v2 vs ktag 1

What is the difference between Kess V3, Kess V2 and Ktag?

1.Communication Method:

Alientech Kess V3 supports OBD, Boot, and BENCH connection

Kess V2 only supports OBD tuning, and K-TAG supports Bench/Boot tuning.

2.Version Update

KESS3 has two versions: Master and Slave. It can be updated from Slave version to Master version, but others cannot.

3.Separate Car & Bike Protocols

Only Kess V3 supports.


Alientech Kess3 uses Alientech Suite while others use K-Suite.

Kess V3 supports upgraded cable set while others use standard cable set.

Kess3 can calculate checksum super fast while others support standard speed.

Kess 3 supports 10 x faster processing

kess v3 vs kess v2 vs ktag 2

In conclusion:

Alientech Kess3 Pros:

  • Powerful microprocessor
  • More potent than the earlier generation
  • Reliable execution of commands
  • Good technical support
  • Faster and more efficient performance
  • Automatic and instant recognition of the right communication line
  • New kess3 combines kess and ktag into 1 tool, you buy the protocols then so you can buy just obd protocols and use like kess was or you can also buy all bench protocols like ktag.

Kess3 Cons:

  • More expensive
  • Requires stable internet connectivity


Alientech KESS V3 Package List:

  • 1x pc KESS3 main unit
  • 1x pc USB cable
  • 1x pc new generation OBD cable
  • 1x pc 1400SWALIM power supply
  • 1x pc 144300TALI Cable
  • 1x pc 144300KBNC Cable
  • 1x pc 144300KTER Pack
  • 1x pc 144300T104 Rainbow Cable IDC 26-10
  • 1x pc 144300T105 Rainbow Cable IDC 26-16
  • 1x pc 144300T106 Rainbow Cable IDC 26-26

kess v3 vs kess v2 vs ktag 3

ALIENTECH KESS V3 Kess3 ECU and TCU Programmer: