How to tune ME7 from a stock ECU — with every basic step shown.

Read ECU information before the flash

1. Open the ECU Info section.
2. Click Read ECU Info.
3. Save or write down the VAG/Bosch part number, software/version information and anything else NefMoto identifies. This becomes part of the next Identify step.

Select the correct memory layout

Do not choose the layout from the car model alone. Common VAG ME7 examples are ME7 29F800BB for a 1 MiB flash and ME7 29F400BB for a 512 KiB flash. TunedByAB's current 06A906032HS 0008 target is a 1,048,576-byte / 1 MiB image. Use NefMoto's layout validation and ECU-specific information rather than guessing.

1. Click Full Read Flash and save the first read as original_read_1.bin.
2. When it completes normally, perform a second full read and save original_read_2.bin.
3. Do not edit either file yet.

First: prove both NefMoto reads match

Put both reads in the same Windows folder. Click the File Explorer address bar, type powershell, press Enter, then run:

Get-FileHash .\original_read_1.bin -Algorithm SHA256
Get-FileHash .\original_read_2.bin -Algorithm SHA256

Then download and test ME7Check / ME7Sum on the stock BIN

1. Open the ME7Sum latest release page.
2. Download the Windows ZIP (current release when this guide was updated: v1.1.6).
3. Extract it to a simple folder such as C:\ME7Tools. You should have ME7Check.exe and me7sum.exe.
4. Copy original_read_1.bin into that working folder. Keep another untouched backup somewhere else.
5. In File Explorer, open C:\ME7Tools, click the address bar, type cmd, then press Enter.

REM Independent check of the untouched original
ME7Check.exe original_read_1.bin

REM ME7Sum check-only mode: no output filename
me7sum.exe original_read_1.bin

1. Install TunerPro from the official link above and open it.
2. Use XDF → Select XDF and choose the XDF made for the exact ECU/software you identified.
3. Use File → Open Bin and select a copy of the verified stock read.
4. Open several known tables. Check that axes and values are believable for that software. If they are obviously nonsensical, stop and verify the XDF.
5. Immediately use File → Save Bin As and name the working file something clear such as stage1_v1_prechecksum.bin.
6. Never overwrite original_read_1.bin or original_read_2.bin.

What to learn before blindly raising boost

ME7 is torque/load based. Learn how driver request, torque/load limits, requested load, boost control, fueling/lambda, ignition and protective strategies interact. Make small, documented changes and prove them with logs. A tune is not verified because the car starts or feels faster.

1. Connect stable battery support and keep the laptop powered. Disable sleep/hibernation.
2. Ignition ON, engine OFF. Turn unnecessary electrical loads off.
3. Open NefMoto, select the KKL device and connect using Slow Init.
4. Select the same correct flash memory layout used for your stock read.
5. Choose stage1_v1_checksum.bin as the flash file. Double-check that the name is not prechecksum.
6. Use NefMoto's memory-layout validation. Do not ignore a layout mismatch just because you want the write to continue.
7. Start Full Write Flash/Write Entire Flash for the current NefMoto interface. Do not unplug the cable, crank the engine, close NefMoto or cycle ignition during the write.
8. Wait for NefMoto to report successful completion and follow its prompts before cycling power.

For a turbo ME7 calibration, useful channels commonly include engine speed, requested/actual load, requested/actual boost or pressure, requested/actual lambda, ignition correction/knock retard, throttle angle, wastegate/N75 duty and relevant temperatures. Compare what happened in the log to what you intended in the calibration.