M86 and M74M VAZ + MULTIMODE
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The M86 ECU is used on Lada Largus, Lada Vesta and X-Ray cars. The M86 project is a further development of the M74/M75 engine control systems. The ECU manufacturer is NPP ITELMA. By analogy with the previous generation systems M74 and M75, the new project will use two different types of software: software produced by VAZ and software produced by ITELMA. The M86 is built on a high-performance 16-bit microcontroller Infineon SAK-XC2768, which has a larger amount of FLASH and RAM compared to the M74 ECU microcontroller. To control the peripherals, a modern combined IC Infineon TLE8888QK is used, which contains a complete set of components for building a control system for a 4-cylinder engine. This integrated circuit includes 5-volt power supplies, CAN and LIN interfaces, intelligent injector and ignition key drivers, smart keys and other components.
The M74M ECU has been installed as standard on VAZ vehicles since mid-2019. Has connectors compatible with the M74 ECU, however the hardware and software are closest to the M86 ECU rather than the M74. This ECU can be read and written using the CombiLoader using the M86 module.
Our module allows you to perform professional chip tuning of Lada Largus, Granta, Vesta and X-Ray cars equipped with M86 and M74M ECUs with software produced by VAZ. Over 700 calibrations of the M86 control system are available for editing: equipment, DTC mask, starting modes, lambda regulation, misfire diagnostics, OZ, fuel supply with dynamic corrections, torque model, EGAS system calibrations, speed limit and cruise control system calibrations, etc. .d. The ECU is programmed using the CombiLoader.
Module features:
- Over 700 editable calibrations
- Automatic calculation of KS when saving firmware
- Working with files in BIN format
- Creation of multi-mode firmware with the ability to switch 3 complete sets of calibrations, turn off injectors and the fuel pump with a programmable delay in any of the modes (for a detailed description, see the ChipTuningPRO help)
- Ability to fix the firmware KS when editing: the desired KS, displayed on the dealer diagnostics, remains unchanged when editing calibrations.
- Possibility of adding a vehicle speed limit function that is not available in the standard software.
- Patch for leaning the mixture above stoichiometry, which is not possible in serial software.
- Patch to enable CC and OS control in trim levels without ABS/AMT.
- Patch for adding DBP tilt and offset to the program code (these calibrations are not in the serial software).
