BMW · MS43 ECU · petrol

BMW Z SERIES MS43 tuning files

Here is what the catalog holds for the BMW Z SERIES on the MS43. Stock output across the matched variants spans 170–231 HP. There are 13 distinct variants on file for this combination. On this petrol engine the focus is sharper throttle and useful, repeatable gains. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All Z 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

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

Variant 1

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: B137556G
Calibration: B137556G

Variant 2

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: C256552F
Calibration: C256552F

Variant 3

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: B1375541
Calibration: B1375541

Variant 4

ECU

Catalog engine: 3000 231HP
Engine code: M54B30
Controller brand: SIEMENS
ECU: MS43
Stock power: 231 HP
SW upgrade: B137554F
Calibration: B137554F

Variant 5

ECU

Catalog engine: 2200 170HP
Engine code: M54B22
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137854D
Calibration: B137854D

Variant 6

ECU

Catalog engine: 2200 170HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137856G
Calibration: B137856G

Variant 7

ECU

Catalog engine: 2200 170HP
Engine code: M54B22
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137E54D
Calibration: B137E54D

Variant 8

ECU

Catalog engine: 2200 170HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137C56G
Calibration: B137C56G

Variant 9

ECU

Catalog engine: 2200 170HP
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137854F
Calibration: B137854F

Variant 10

ECU

Catalog engine: 2200 170HP
Engine code: M54B22
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137854H
Calibration: B137854H

Variant 11

ECU

Catalog engine: 2200 170HP
Engine code: M54B22
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: C155E50G
Calibration: C155E50G

Variant 12

ECU

Catalog engine: 2200 170HP
Engine code: M54B22
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137C56H
Calibration: B137C56H

Variant 13

ECU

Catalog engine: 2200 170HP
Engine code: M54B22
Controller brand: SIEMENS
ECU: MS43
Stock power: 170 HP
SW upgrade: B137E54G
Calibration: B137E54G

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 Z 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 Z 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.