BMW · MS45 ECU · petrol

BMW X SERIES MS45 tuning files

The BMW X SERIES on the MS45, mapped from stock file to finished result. Stock output across the matched variants spans 192–231 HP. There are 6 distinct variants on file for this combination. Petrol calibration here is about crisp response and a result that holds up day to day. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All X SERIES coverage

Available solutions

Solutions that apply to the MS45 on this petrol platform. The exact set depends on the specific engine and software version.

Stage 1 Stage 2 Swirl Flaps OffLambda / O2OPF/GPF Off

Engine variants & ECU software

6 distinct variants for the BMW X SERIES on the MS45 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS45
Stock power: 231 HP
Calibration: 0044570LO00S0LJ2B

Variant 2

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS45
Stock power: 231 HP

Variant 3

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS45
Stock power: 231 HP
ECU SW: 6577365629
ECU HW: 6577365208
Calibration: 0044570LM00S0LJ4B

Variant 4

ECU

Catalog engine: 2500 192HP
Engine code: M54B25
Controller brand: SIEMENS
ECU: MS45
Stock power: 192 HP
Calibration: 0044560BL30S0KA1B

Variant 5

ECU

Catalog engine: 2500 192HP
Controller brand: SIEMENS
ECU: MS45
Stock power: 192 HP

Variant 6

ECU

Catalog engine: 2500 192HP
Engine code: M54B25
Controller brand: SIEMENS
ECU: MS45
Stock power: 192 HP
ECU SW: 6577365636
ECU HW: 6577365209
Calibration: 0044560BO00S0KF2B

Related vehicles

Other vehicles built on the MS45 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the BMW X SERIES on the MS45?

Stage 1, Stage 2, Swirl Flaps Off, Lambda / O2, OPF/GPF Off. The exact set depends on the specific engine and software version.

Do you cover the MS45 ECU software on this model?

Yes — the BMW X SERIES on the MS45 ECU is part of the catalog. Upload your original file and it is matched to the right calibration before any work is done.

How is the file delivered?

Through the TuningBay workflow with operator validation and one safe, sensible result per job. Files we deliver, we stand behind.