Original ECU file

BMW 3 serie 320i 170hp

Siemens/Continental · MS43

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

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Vehicle and ECU details

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

Vehicle
BMW 3 serie 320i 170hp
Vehicle type
Passenger car
Fuel
Petrol
Engine code
M54B22
Displacement
2200 ccm (2.2 L)
Power
125.0 kW / 170 PS
Model year
2002
Transmission
5
ECU manufacturer
Siemens/Continental
ECU designation
MS43
Software number
4300056010000
Software version
c256850g43005601
File size
524.288 Byte

For tuners and workshops

A tuning file for your customer's vehicle

Upload the file you have read to our fileservice portal and choose the work required. We modify the file. You download the result and flash the vehicle.

Register in the portal

The file service portal is available in German and English.

Explore the fileservice

One-off shop order

Stage 1 optimisation

Order a Stage 1 modification directly in the shop. The vehicle and ECU details from this page are attached to your order.

After ordering, send the original file you have read and your order number to info@stefanel-performance.com.

179,99 € EUR incl. VAT

Additional tuning options

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

AGR / EGR OFF

Disable exhaust gas recirculation

Open the fileservice portal

The file service portal is available in German and English.

Order tuning in the shop – how it works

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

  1. Read the original file

    Read the control unit with a compatible tool, such as KESS3, Autotuner or FLEX.

  2. Order your tuning

    Select your service and pay through the shop checkout. Available payment methods are shown there.

  3. Send your file

    Email your read-out original file together with your order number to info@stefanel-performance.com.

  4. 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

Tools and on-site service

Prefer not to read or flash the ECU yourself?

Use our on-site service. Contact us to discuss your vehicle, the required service and a suitable location for calibration and flashing.

On-site service & installation partners

Need help matching the file?

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

Contact us on WhatsApp +49 8031 409 2134