Tuning Numbers
Audi A4 1.8i 20v tuning files
B51995–2001125 hpStage 1
TuningFactory provides custom ECU tuning files for professional tuners working with the Audi A4 1.8i 20v B5. Review the Stage 1 figures and ECU details below, then submit your original file and requirements through our customer portal.
Stage 1
Performance
Power
135 hp Stage 1
- Original
- 125 hp
- Stage 1
- 135 hp
- Increase
- +10 hp
Torque
185 Nm Stage 1
- Original
- 170 Nm
- Stage 1
- 185 Nm
- Increase
- +15 Nm
Technical specifications
- Fuel type
- Petrol
- Method
- Chiptuning
- Tuning type
- Stage 1
- Cylinder capacity
- 1,781 cc
- Engine ECU
- Bosch ME7.5.5
- Compression ratio
- 10.3
- Bore × stroke
- 81.0 X 86.4 mm
- Engine code
- ADR
Reading tools
- CMDFlash
Additional options
- Anti lag
- DECAT
- DTC Removal
- FLAPS
- Pop & Bang Crackle map
- Vmax
ECU tuning files for the Audi A4 1.8i 20v B5
Stage 1 performance
The listed Stage 1 output is 135 hp and 185 Nm, compared with the original 125 hp and 170 Nm. This represents an increase of 10 hp and 15 Nm. These figures are indicative; actual results depend on the vehicle’s condition, hardware, fuel and ECU software.
ECU identification
The ECU listed for this vehicle is the Bosch ME7.5.5. Check the ECU identification and software version fitted to the vehicle before selecting a reading protocol or requesting a file.

Start your tuning file request
Submit your original ECU file and requirements through the TuningFactory customer portal. Include the ECU identification, the tool used to read the file and any relevant hardware changes. These details help us assess the request against the vehicle in your workshop.
Need help matching the vehicle or ECU? Contact TuningFactory with the identification details so we can discuss your request.
Frequently asked questions
Which reading tool should I use?
Check your tool’s current coverage for the exact ECU and software version fitted to the vehicle. The correct reading protocol depends on that configuration. If you need help identifying it, contact us with the ECU details.
What should I include with my request?
Provide the original ECU file, ECU identification, reading tool and the requested tuning stage or options. Mention relevant hardware changes and any specific requirements.
What do the performance figures represent?
The figures are reference values for the listed vehicle configuration. Actual output can vary with the vehicle’s condition, hardware, fuel and ECU software.