Kess V3 Master 12 Months Subs

Alientech KESS3 Master tool, which is the latest generation from Alientech (replacing the old KESSv2 and K-TAG).

🔧 What is KESS3 Master?

• A professional ECU & TCU programming tool.

• Reads and writes engine & gearbox software via OBD, Bench, or Boot.

• The Master version gives you unencrypted/original files, so you can edit them with tuning software (e.g., WinOLS, Swiftec).

• Ideal for tuners who want full independence, create their own maps, or run their own file service.

🛠 KESS3 Master vs KESS3 Slave

• Master Tool

  • Reads & writes open files.

  • Can edit maps yourself.

  • Can use any file service.

  • More expensive, but gives complete freedom.

• Slave Tool

  • Reads encrypted files.

  • Must send to a linked Master tuner/file service.

  • Cheaper, ideal for beginners or mobile tuners.

⚡ Why Choose KESS3 Master?

• All-in-one hardware → replaces both KESSv2 (OBD) & K-TAG (bench/boot).

• Upgradeable protocols → buy only what you need (Cars, Bikes, Trucks, Agriculture, Marine).

• Regular updates → Alientech is one of the most consistent brands for ECU/TCU coverage.

• Independence → use any file service or build your own maps.

• Scalable → you can even have Slave tuners linked to you.