Audi S3 ECU remapping
539 files available
About remapping
The Audi S3 accounts for 539 files in our catalogue, dominated by the 2.0 TFSI in its various outputs, with the earlier 1.8T of the first generation alongside it. It is the performance version of the A3, and the requested work reflects a distinctly enthusiast owner base.
Stage 1 makes up 350 files but Stage 2 reaches 162 — one of the highest proportions in our catalogue — plus 36 pop and bang and 9 Stage 3. The ECUs are MED9.1, MED9.1.5, SIMOS18, SIMOS12 and ME7.5, plus DQ250 transmission units on some cars.
Model highlights
- ›350 Stage 1 files and 162 Stage 2: an unusually high second-level proportion.
- ›The 2.0 TFSI is the dominant engine, with the earlier 1.8T alongside.
- ›36 pop and bang files and 9 Stage 3 for heavily modified cars.
- ›ECUs including MED9.1, MED9.1.5, SIMOS18, SIMOS12, ME7.5 and DQ250.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| 2.0 TFSI | Petrol | 265 hp | 305 hp +40 | 326 hp +61 |
| 1.8T | Petrol | 210 hp | 250 hp +40 | 265 hp +55 |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
1.8T
ECUs
ECU manufacturers
Available services
Remapping services
Stage 1
Optimising the original map with no hardware changes: more power and torque, full reliability.
Stage 2
Remap for vehicles with mechanical upgrades (intake, exhaust, intercooler…).
Pops & bangs
Pops & bangs exhaust effect (on lift-off and gear changes).
Speed limiter removal
Removal of the factory speed limiter.
Stage 3
Setup for high-performance modifications on specific hardware.
DTC delete
Clearing of fault codes (DTC) that can't be removed via diagnosis.
Why remap with Repromatronic
- ✓More power and torque with engine-safe tuning
- ✓Sharper throttle response and nicer driving
- ✓Potential fuel savings in normal driving
- ✓Files built from the original and 100% reversible
- ✓Made by technicians with thousands of projects behind them
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Log in as a professionalFrequently asked questions
Why so much Stage 2 work on the S3?
Because a large share of these cars arrive with intake, exhaust or intercooler modifications already fitted. Stage 2 assumes that hardware; if your car is standard, Stage 1 applies.
What is the DQ250?
It is the dual-clutch transmission ECU. Work on it adjusts shift points and torque limits, and often complements an engine map.
How much does the 2.0 TFSI take?
It is a turbocharged petrol with substantial headroom, which is why it has such a strong tuning tradition.