BMW 1 3 X SERIES N54 MSD81 DME ECU PLUG AND PLAY

BMW MSD81 ECU Repair & Replacement Service (N54 Engines)

We specialise in BMW MSD81 ECU repair and replacement for N54-powered models, including:
135i, 335i, 1M, X6, and 740i.

If your vehicle is still running the earlier MSD80 ECU, we can also upgrade it to MSD81, eliminating the common MOSFET failure issues found in MSD80 units.

How It Works

1. Send us your original ECU, CAS, and key.

2. Once received, we will repair or replace your ECU — typically same or next business day.

3. Your repaired or replacement ECU, CAS, and key will then be dispatched back to you immediately.

Optional Add-Ons

You can select additional services at checkout, such as:

• Extra key / remote programmed (Blank manual blade will be included as well, not cut)
  

Common MSD81 ECU Issues We Repair

• Water damage or internal corrosion

• No communication with diagnostic tools or crank-no-start condition

• Injector and misfire-related fault codes, including:

  • 30BA – DME: Injector 1, 2, 3 / Internal fault

  • 30BB – DME: Injector 4, 5, 6 / Internal fault

  • 29CD – Misfire, Cylinder 1

  • 29CE – Misfire, Cylinder 2

  • 29CF – Misfire, Cylinder 3

  • 29D0 – Misfire, Cylinder 4

  • 29D1 – Misfire, Cylinder 5

  • 29D2 – Misfire, Cylinder 6

  • 29CC – Misfire, multiple cylinders

Our goal is to get your BMW back on the road quickly and reliably — with restored performance and long-term ECU health.
Fast turnaround. Expert service. N54 specialists.

ECU PART NUMBERS: (There are plenty more, ALL MSD81 or MSD80 will work)

• 7586933
• 7592080
• 7621178
• 7602118
• 7621178
• 7595179
• 7616431
• 7586933
• 7592080
• 7593493
• 7568842
• 7575875
• 7583332
• 7604567
• 7611358
• 7622911
• 5WK93714
• 5WK93724
• 5WK94901
• 5WK93738
• 5WK94901
• 5WK93727
• 5WK93754
• 5WK93714
• 5WK93724
• 5WK93608
• 5WK93628
• 5WK93642