AUDI · MED17.5.20 ECU · petrol

AUDI A3 MED17.5.20 tuning files

The AUDI A3 on the MED17.5.20, mapped from stock file to finished result. Stock output across the matched variants spans 125–150 HP. It is a petrol platform, tuned for response and clean power delivery. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All A3 coverage

Available solutions

Applicable work for the MED17.5.20 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

8 distinct variants for the AUDI A3 on the MED17.5.20 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 2000 150HP
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 150 HP

Variant 2

ECU

Catalog engine: 1400 16v TFSI 125HP
Engine code: CAXC
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 125 HP
SW upgrade: 03C906022AN_5942
Calibration: 03C906022AN_5942

Variant 3

ECU

Catalog engine: 1400 16v TFSI 125HP
Engine code: CAXC
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 125 HP
SW upgrade: 03C906022_1580
Calibration: 03C906022_1580

Variant 4

ECU

Catalog engine: 1400 16v TFSI 125HP
Engine code: CAXC
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 125 HP
ECU SW: 1037505722
ECU HW: 0261201786
SW upgrade: 03C906022_5941
Calibration: 03C906022_5941

Variant 5

ECU

Catalog engine: 1400 125HP
Engine code: CAXA
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 125 HP
SW upgrade: 03C906022AJ_8653
Calibration: 03C906022AJ_8653

Variant 6

ECU

Catalog engine: 1400 125HP
Engine code: CAXC
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 125 HP
ECU SW: 1037500567
ECU HW: 0261S05427
SW upgrade: 03C997022A_4474
Calibration: 03C997022A_4474

Variant 7

ECU

Catalog engine: 1400 125HP
Engine code: CAXC
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 125 HP
SW upgrade: 03C906022_8637
Calibration: 03C906022_8637

Variant 8

ECU

Catalog engine: 1400 125HP
Engine code: CAXC
Controller brand: BOSCH
ECU: MED17.5.20
Stock power: 125 HP
ECU SW: 2732
ECU HW: 03C906022AN
SW upgrade: 03C906022AN_2732
Calibration: 03C906022AN_2732

Related vehicles

Other vehicles built on the MED17.5.20 controller or the same engine — handy when a platform spans several models and makes.

Questions, answered.

Which tuning solutions are available for the AUDI A3 on the MED17.5.20?

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 MED17.5.20 ECU software on this model?

Yes — the AUDI A3 on the MED17.5.20 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.