BMW MS43 ECU Cloning Service (Plug & Play)

Restore full plug-and-play functionality to your BMW with our professional MS43 ECU Cloning Service. This service transfers all factory data — including VIN, immobilizer (CAS/EWS) data, coding, and adaptations — from your original MS43 ECU to a replacement unit so the car will start and run without dealer-level programming.

How It Works:

1. Send in your ECUs: ship your original MS43 ECU and your replacement ECU to us.

2. If the original ECU is unreadable or dead: include your CAS/EWS module and key.

3. We perform a full binary clone (flash + EEPROM) using bench BDM tools and verify checksums and ISN data.

4. We bench-test the cloned unit and ship it back. Typical completion is 1–2 business days after receipt.

Benefits:

• Fully plug-and-play when a complete BDM clone is performed (no in-car CAS/EWS sync required).

• Preserves VIN, ISN/immobilizer data, coding, and adaptations.

• Works even if the original ECU has communication faults.

• Bench-tested for functionality before return.

• Trusted by independent BMW rebuilders and tuners.

Supported Models:
MS43 is used with BMW M54 inline-six engines. Common applications include:

• E46 325i / 330i.

• E39 525i / 530i.

• E53 X5 3.0i. 

• E83 X3 3.0i. 

Shipping Instructions:

• Include both ECUs (or replacement ECU + CAS/EWS and key if the original is faulty).

• Add a packing slip with your name, contact info, vehicle year/model, and an order number (if applicable).

• Pack securely with anti-static wrapping and padding to prevent damage in transit.

Turnaround: 1–2 business days after receipt