BMW · MS43 ECU · petrol

BMW X SERIES MS43 tuning files

Here is what the catalog holds for the BMW X SERIES on the MS43. Across the matched variants stock power runs from 231 to 231 HP. It is a petrol platform, tuned for response and clean power delivery. Each file is tied to the precise software on your car and checked before it goes out.

Upload your file →All X SERIES coverage

Available solutions

Applicable work for the MS43 on this petrol. The available set firms up once the exact engine and software are known.

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

Engine variants & ECU software

16 distinct variants for the BMW X SERIES on the MS43 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256A54G
Calibration: C256A54G

Variant 2

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C464X53J
Calibration: C464X53J

Variant 3

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C155452K
Calibration: C155452K

Variant 4

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C464H52F
Calibration: C464H52F

Variant 5

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256Z50F
Calibration: C256Z50F

Variant 6

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256A54D
Calibration: C256A54D

Variant 7

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: B137454H
Calibration: B137454H

Variant 8

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256J548
Calibration: C256J548

Variant 9

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256450F
Calibration: C256450F

Variant 10

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256J54D
Calibration: C256J54D

Variant 11

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256J52D
Calibration: C256J52D

Variant 12

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
ECU HW: 7518111
SW upgrade: C155452F
Calibration: C155452F

Variant 13

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C566Z50K
Calibration: C566Z50K

Variant 14

ECU

Catalog engine: 3000 231HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C356650B
Calibration: C356650B

Variant 15

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
ECU HW: 7518111
SW upgrade: C155650G
Calibration: C155650G

Variant 16

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
ECU HW: 7518111
SW upgrade: C155650I
Calibration: C155650I

Related vehicles

Other vehicles built on the MS43 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 MS43?

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 MS43 ECU software on this model?

Yes — the BMW X SERIES on the MS43 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.