BMW · MS42 ECU · petrol

BMW 5 SERIES MS42 tuning files

The BMW 5 SERIES on the MS42, mapped from stock file to finished result. Stock output across the matched variants spans 150–190 HP. There are 10 distinct variants on file for this combination. Petrol calibration here is about crisp response and a result that holds up day to day. Each file is tied to the precise software on your car and checked before it goes out.

Upload your file →All 5 SERIES coverage

Available solutions

Applicable work for the MS42 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

10 distinct variants for the BMW 5 SERIES on the MS42 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 2800 190HP
Controller brand: SIEMENS
ECU: MS42
Stock power: 190 HP

Variant 2

ECU

Catalog engine: 2800 190HP
Engine code: M52B25TU
Controller brand: SIEMENS
ECU: MS42
Stock power: 190 HP
ECU SW: E300
ECU HW: 7500255

Variant 3

ECU

Catalog engine: 2500 170HP
Controller brand: SIEMENS
ECU: MS42
Stock power: 170 HP

Variant 4

ECU

Catalog engine: 2500 170HP
Engine code: M52B25TU
Controller brand: SIEMENS
ECU: MS42
Stock power: 170 HP
Calibration: 84ad521f

Variant 5

ECU

Catalog engine: 2500 170HP
Engine code: M52B25TU
Controller brand: SIEMENS
ECU: MS42
Stock power: 170 HP
Calibration: 91c6r109

Variant 6

ECU

Catalog engine: 2500 170HP
Engine code: M52B25TU
Controller brand: SIEMENS
ECU: MS42
Stock power: 170 HP
Calibration: 93c9r109

Variant 7

ECU

Catalog engine: 2000 150HP
Controller brand: SIEMENS
ECU: MS42
Stock power: 150 HP
Calibration: 84adh21g

Variant 8

ECU

Catalog engine: 2000 150HP
Controller brand: SIEMENS
ECU: MS42
Stock power: 150 HP
Calibration: 93c9420r

Variant 9

ECU

Catalog engine: 2000 150HP
Controller brand: SIEMENS
ECU: MS42
Stock power: 150 HP
Calibration: 91c6422g

Variant 10

ECU

Catalog engine: 2000 150HP
Controller brand: SIEMENS
ECU: MS42
Stock power: 150 HP

Related vehicles

Other vehicles built on the MS42 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the BMW 5 SERIES on the MS42?

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 MS42 ECU software on this model?

Yes — the BMW 5 SERIES on the MS42 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.