Mazda MX-5 ECU remapping
56 files available
About remapping
The Mazda MX-5 accounts for 56 files in our catalogue, entirely naturally aspirated petrol: the 2.0 SkyActiv-G of current cars and the 1.8 and 2.0 MZR of earlier generations. It is the best-selling roadster in history, built around balance rather than outright power.
Stage 1 makes up 38 files, with 5 speed limiter removals and 3 Stage 2. Being naturally aspirated, gains are modest in figures and sought mainly in throttle response. The ECUs are Denso with SH725X and SH7058 processors.
Model highlights
- ›38 Stage 1 files, entirely on naturally aspirated petrol engines.
- ›Coverage of the 2.0 SkyActiv-G and the earlier 1.8 and 2.0 MZR.
- ›The best-selling roadster in history, built around balance.
- ›Denso ECUs with SH725X and SH7058 processors.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| 2.0 Skyactiv-G | Petrol | 184 hp | 198 hp +14 | — |
| 2.0 MZR | Petrol | 160 hp | 172 hp +12 | — |
| 1.5 Skyactiv-G | Petrol | 131 hp | 140 hp +9 | 146 hp +15 |
| 1.8 MZR | Petrol | 125 hp | 137 hp +12 | — |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
1.5 Skyactiv-G
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.
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
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Log in as a professionalFrequently asked questions
How much can a naturally aspirated MX-5 gain?
Modestly in figures, because there is no boost pressure to adjust. Gains show mainly in throttle response and the upper rev range.
Is it worthwhile then?
It depends what you want. On a car built around balance and response, a well-judged map can add more than the numbers suggest.
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.