BMW · MS42 ECU · petrol

BMW M3-SERIES MS42 tuning files

BMW M3-SERIES on the MS42: matched, calibrated and delivered with care. The matched variants sit between 343 and 343 HP from the factory. There are 3 distinct variants on file for this combination. 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.

Available solutions

Solutions that apply to the MS42 on this petrol platform. The exact set depends on the specific engine and software version.

Engine variants & ECU software

3 distinct variants for the BMW M3-SERIES on the MS42 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU
Catalog engine
3200 343HP
Generation
E46 1998-2005
Matched gains engine
E46 M3 343
Controller brand
SIEMENS
ECU
MS42
Stock power
343 HP
Stage 1 power
365 HP
Power increase
+22 HP (+6%)
Stock torque
365 Nm
Stage 1 torque
390 Nm
Torque increase
+25 Nm (+7%)
ECU HW
7842569

Variant 2

ECU
Catalog engine
3200 343HP
Generation
E46 1998-2005
Matched gains engine
E46 M3 343
Controller brand
SIEMENS
ECU
MS42
Stock power
343 HP
Stage 1 power
365 HP
Power increase
+22 HP (+6%)
Stock torque
365 Nm
Stage 1 torque
390 Nm
Torque increase
+25 Nm (+7%)
Calibration
7500255

Variant 3

ECU
Catalog engine
3200 343HP
Generation
E46 1998-2005
Matched gains engine
E46 M3 343
Controller brand
SIEMENS
ECU
MS42
Stock power
343 HP
Stage 1 power
365 HP
Power increase
+22 HP (+6%)
Stock torque
365 Nm
Stage 1 torque
390 Nm
Torque increase
+25 Nm (+7%)

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 M3-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 M3-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.

BMW M3-SERIES MS42 ECU Tuning Files | TuningBay