Mazda CX-3 ECU remapping
52 files available
About remapping
The Mazda CX-3 accounts for 52 files in our catalogue, with a balanced split between the 2.0 SkyActiv-G petrol and the 1.5 SkyActiv-D diesel. It is a compact crossover with the engineering approach the brand is known for.
Stage 1 makes up 37 files, with 8 EGR off and 8 speed limiter removals. The ECUs are Denso with SH725X, SH72543 and SH7059 processors — quite unlike the Bosch or Siemens standard in Europe.
Model highlights
- ›37 Stage 1 files with a balanced petrol and diesel split.
- ›Coverage of the 2.0 SkyActiv-G and the 1.5 SkyActiv-D.
- ›8 EGR off files and 8 speed limiter removals.
- ›Denso ECUs with SH725X, SH72543 and SH7059 processors.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| 2.0 Skyactiv-G | Petrol | 150 hp | 180 hp +30 | — |
| 1.5 Skyactiv-D | Diesel | 105 hp | 130 hp +25 | — |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
1.5 Skyactiv-D
ECUs
ECU manufacturers
Available services
Remapping services
Stage 1
Optimising the original map with no hardware changes: more power and torque, full reliability.
Speed limiter removal
Removal of the factory speed limiter.
EGR off
EGR valve management to reduce soot issues and improve response.
DPF off
Particulate filter solution: no more regenerations or blockage warnings.
Stage 2
Remap for vehicles with mechanical upgrades (intake, exhaust, intercooler…).
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
Are you a driver?
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Log in as a professionalFrequently asked questions
What is SkyActiv?
It is Mazda's engine technology aimed at efficiency through unusual compression ratios, applied to both petrol and diesel units.
What makes Mazda's electronics different?
They use Denso ECUs with their own processor references, quite unlike the Bosch or Siemens units standard on European cars.
Is the work reversible?
Yes. We always keep the original ECU file, so the vehicle can be returned to its factory configuration.