Flex Master

Flex Master tool by Magic Motorsport — one of the most popular professional ECU/TCU programming systems in the tuning industry.

🔧 What is the Flex Master Tool?

• A professional ECU & TCU programmer.

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

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

• Unlike the Slave tool, the Master doesn’t tie you to a specific file service — you have full control.

🛠 Flex Master vs Flex Slave

• Master Tool

  • Reads & writes open/unlocked files.

  • Lets you edit maps yourself or use multiple file providers.

  • More expensive, but gives you independence.

• Slave Tool

  • Files are encrypted.

  • You must send them to your linked Master/file service for modification.

  • Cheaper and easier for beginners but less freedom.

⚡ Why Choose Flex Master?

• Independence: You can edit your own maps and work with any file service.

• Flexibility: Supports both ECU (engine) and TCU (transmission) tuning.

• Business growth: You can even run your own file service and have Slave tuners linked to you.

• Wide coverage: Thousands of vehicles supported (cars, vans, trucks, motorcycles, agricultural, marine).

• Regular updates: Magic Motorsport pushes frequent protocol updates.