AUDI · SIMOS3.03 ECU · petrol

AUDI A3 SIMOS3.03 tuning files

The AUDI A3 on the SIMOS3.03, mapped from stock file to finished result. Across the matched variants stock power runs from 102 to 102 HP. There are 3 distinct variants on file for this combination. On this petrol engine the focus is sharper throttle and useful, repeatable gains. Your file is built against the exact ECU software on the car, then operator-verified.

Upload your file →All A3 coverage

Available solutions

Solutions that apply to the SIMOS3.03 on this petrol platform. The exact set depends on the specific engine and software version.

Stage 1 Stage 2 Swirl Flaps OffLambda / O2OPF/GPF Off

Engine variants & ECU software

3 distinct variants for the AUDI A3 on the SIMOS3.03 ECU. Reference the engine and controller software when you upload.

Variant 1

ECU

Catalog engine: 1600 8V 102HP
Generation: 8P Mk1 2003-2008
Matched gains engine: 1.6 8V 102
Controller brand: SIEMENS
ECU: SIMOS3.03
Stock power: 102 HP
Stage 1 power: 114 HP
Power increase: +12 HP (+12%)
Stock torque: 148 Nm
Stage 1 torque: 163 Nm
Torque increase: +15 Nm (+10%)
SW upgrade: 06A906033J_3488
Calibration: 06A906033J_3488

Variant 2

ECU

Catalog engine: 1600 8V 102HP
Generation: 8P Mk1 2003-2008
Matched gains engine: 1.6 8V 102
Controller brand: SIEMENS
ECU: SIMOS3.03
Stock power: 102 HP
Stage 1 power: 114 HP
Power increase: +12 HP (+12%)
Stock torque: 148 Nm
Stage 1 torque: 163 Nm
Torque increase: +15 Nm (+10%)
SW upgrade: 06A906033BD_4582
Calibration: 06A906033BD_4582

Variant 3

ECU

Catalog engine: 1600 8V 102HP
Generation: 8P Mk1 2003-2008
Matched gains engine: 1.6 8V 102
Controller brand: SIEMENS
ECU: SIMOS3.03
Stock power: 102 HP
Stage 1 power: 114 HP
Power increase: +12 HP (+12%)
Stock torque: 148 Nm
Stage 1 torque: 163 Nm
Torque increase: +15 Nm (+10%)
SW upgrade: 06A906033BN_4581
Calibration: 06A906033BN_4581

Related vehicles

Other vehicles built on the SIMOS3.03 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 SIMOS3.03?

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 SIMOS3.03 ECU software on this model?

Yes — the AUDI A3 on the SIMOS3.03 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.