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Zuce Shop

Official distributor for Magicmotorsport tuning equipment for Australia and New Zealand.

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Email: [email protected]

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  • McLaren Flex Exclusive Protocol for ECU Tuning and Remapping Software
McLaren Flex Exclusive Protocol for ECU Tuning and Remapping Software
Krishna Maharjan
Monday, 30 June 2025 / Published in Flex

McLaren Flex Exclusive Protocol for ECU Tuning and Remapping Software

Bootloader Mode for Supercars with New Flex Protocol for McLaren

Welcome to the latest version of Flex, now at 7.25.0.0! This is your gateway to achieving exceptional results in TCU and CCU performance tuning for McLaren supercars such as the 570GT and 720S in Bootloader mode.

Optimize your TCU by uploading finely-tuned maps and customizing gear shifting logics that enhance on-track performance and everyday driving. Not to mention, the CCU supports semi-active hydraulic suspension management, allowing you to adjust shock absorber response, chassis balance, and dynamic stiffness effortlessly.

This innovative protocol can read and write the complete Flash memory (with emulated EEPROM) of the MPC5554 microprocessor, all in record time!

Some of the Supported Vehicles:

  • McLaren 540C 3.8L V8 BiTurbo 540PS

  • McLaren 620R 3.8L V8 BiTurbo 620PS

  • McLaren 720S 4.0L Twin Turbo 720PS

Check all supported vehicles

This new protocol is available for the following software packages:

Boot

  • TCU:
    • FLS0.2M – SW Flex TCU OBD/Bench/Boot (cars, bikes, vans) Master
    • FLS0.2S – SW Flex TCU OBD/Bench/Boot (cars, bikes, vans) Slave
    • FLS0.4M – SW Flex Boot Nexus MPC5xxx Master
    • FLS0.4S – SW Flex Boot Nexus MPC5xxx Slave
    • FLS0.5M – SW Flex Full Master
    • FLS0.5S – SW Flex Full Slave
  • CCU:
    • FLS0.4M – SW Flex Boot Nexus MPC5xxx Master
    • FLS0.4S – SW Flex Boot Nexus MPC5xxx Slave
    • FLS0.5M – SW Flex Full Master
    • FLS0.5S – SW Flex Full Slave

Newly Added Protocols:

Boot

  • McLaren TCU 14M1084CP MPC5554 Read/Write/Checksum Calculation Internal Flash
  • McLaren CCU 14B0303CP MPC5554 Read/Write/Checksum Calculation Internal Flash

Writing Time:

~1 minute

Reading Time:

~1 minute

Bug Fixes:

  • Improved verify on VAG Continental PCR2.1
  • Added new CRC type for Ford Bosch MG1CS036
  • Fix CRC calculation in some types of Ford Bosch MG1CS015/16

{exclusive deal available now}

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What you can read next

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Introducing FLEX Version 5.16.0.0: The Latest in Automotive ECU Tuning and Remapping Tools
Unlock Up to 45% Savings on StageX ECU Tuning and Remapping Software Licenses!
Unlock Up to 45% Savings on StageX ECU Tuning and Remapping Software Licenses!
Optimized ECU Tuning and Remapping Tools: Bench Solutions for GETRAG Gen2 BMW and OBD for Bosch Honda MEDC17 ECUs
Ultimate ECU Tuning Bench for GETRAG Gen2 BMW and OBD Remapping for Bosch Honda MEDC17 ECUs

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