Variant 1
ECU- Catalog engine
- 1900 TDI 90HP
- Controller brand
- BOSCH
- ECU
- MS A12
- Stock power
- 90 HP
AUDI · MS A12 ECU · diesel
AUDI A4 MS A12 tuning files
Tuning file coverage for the AUDI A4 running the MS A12 ECU. Stock output across the matched variants spans 90–90 HP. Diesel calibration here covers everything from a clean Stage 1 to the emissions-side work. Each file is tied to the precise software on your car and checked before it goes out.
Available solutions
Applicable work for the MS A12 on this diesel. The available set firms up once the exact engine and software are known.
Engine variants & ECU software
1 distinct variant for the AUDI A4 on the MS A12 ECU. Reference the engine and controller software when you upload.
Related vehicles
Other vehicles built on the MS A12 controller or the same engine — handy when a platform spans several models and makes.
Questions, answered.
Which tuning solutions are available for the AUDI A4 on the MS A12?
Stage 1, Stage 2, DPF Off, EGR Off, Swirl Flaps Off, Lambda / O2, MAF Off, TVA, NOx Off, AGS, Readiness, Start/Stop Off, Oil Pressure, Limp Mode Off. The exact set depends on the specific engine and software version.
Do you cover the MS A12 ECU software on this model?
Yes — the AUDI A4 on the MS A12 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.