ECU CalibChange Tool - Automotive Software Utility Tool 2025-11-06

New release thread for ECU CalibChange Tool — M74/M73 calibration editor (K-Line & CAN): discuss, share feedback, and get help.

ECU CalibChange Tool — M74/M73 calibration editor (K-Line & CAN)​

Offline calibration/option editor for Bosch M7.9.7 (M74) and M7.3 ECUs; supports dozens of firmware

Quick intro
ECU CalibChange Tool by KAZi is a compact utility for viewing and editing certain calibration/options areas in Bosch M7.9.7 (M74) and M7.3 family ECUs used on CIS-market vehicles. Works offline with BIN files; intended for advanced users who already know how to read/write ECU memory with external tools.

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Highlights

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Frequently Asked Questions​

Which Windows version is recommended?
For maximum stability during ECU flashing and diagnostics, a clean installation of Windows 10 (64-bit) is recommended.
Is it compatible with J2534 PassThru?
Most modern software versions support standard J2534 interfaces like Scanmatik 2 Pro, OpenPort 2.0, and specific VCI adapters.

What's inside:

• Overview & screenshots
• Version history and compatibility
• Download link and setup notes

View full details and download — ECU CalibChange Tool — M74/M73 calibration editor (K-Line & CAN)