Original ECU file

BMW M3 4.0 V8 - 420hp

Siemens/Continental · MSS6x

The original file for this software version. Before buying, compare the ECU details with your vehicle and reading tool.

Vehicle and ECU details

These details identify the file offered here. A matching vehicle model alone is not enough to select the correct file.

Available services depend on the control unit and software version. Check the options for your file in the fileservice portal.

Disable exhaust gas recirculation

The file service portal is available in German and English.

For an individual shop order, send us your read-out file by email. In the fileservice portal, upload it directly to your order.

Read the original file
Read the control unit with a compatible tool, such as KESS3, Autotuner or FLEX.
Order your tuning
Select your service and pay through the shop checkout. Available payment methods are shown there.
Send your file
Email your read-out original file together with your order number to info@stefanel-performance.com.
Receive the file & flash
We edit your file and send it back by email. You download it and flash the vehicle.

Digital delivery by email Payment through the shop checkout Email support

Have your hardware number, software number and reading tool details ready.