Subaru IMPREZA ECU remapping
118 files available
About remapping
The Subaru Impreza accounts for 118 files in our catalogue. The 2.0 D boxer is the most represented engine, but what gives the model its identity is the 2.5 T petrol, a direct heir to the brand's rallying tradition with considerable headroom.
Stage 1 accounts for 97 files, alongside 38 EGR off and 31 DPF off on the diesel versions. There are also 5 pop and bang files, consistent with the model's profile. The ECUs are Subaru's own: Denso and Hitachi on SH7058 and SH7059 processors, plus the occasional 68HC16 on older units.
Model highlights
- ›97 Stage 1 files, split between the 2.0 D boxer and the 2.5 T petrol.
- ›The 2.5 T turbocharged petrol is where the margin for improvement is widest.
- ›38 EGR off and 31 DPF off files on the diesel versions.
- ›Denso and Hitachi ECUs (SH7058, SH7059), specific to the brand.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| 2.5 WRX STI | Petrol | 300 hp | 325 hp +25 | 355 hp +55 |
| 2.5 WRX | Petrol | 265 hp | 305 hp +40 | 320 hp +55 |
| 2.0 WRX STI | Petrol | 265 hp | 294 hp +29 | — |
| 2.0 WRX | Petrol | 224 hp | 254 hp +30 | — |
| 2.0 Turbo | Petrol | 218 hp | 248 hp +30 | — |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
2.0 WRX STI
ECUs
ECU manufacturers
Available services
Remapping services
Stage 1
Optimising the original map with no hardware changes: more power and torque, full reliability.
EGR off
EGR valve management to reduce soot issues and improve response.
DPF off
Particulate filter solution: no more regenerations or blockage warnings.
Speed limiter removal
Removal of the factory speed limiter.
Pops & bangs
Pops & bangs exhaust effect (on lift-off and gear changes).
Stage 2
Remap for vehicles with mechanical upgrades (intake, exhaust, intercooler…).
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
Are you a driver?
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Log in as a professionalFrequently asked questions
How much does the Impreza's 2.5 T allow?
It is a turbocharged petrol with a wide margin, which is why it has such a long tuning tradition. Stage 1 works with standard hardware; going further requires mechanical modifications.
Do you also work on the diesel Imprezas?
Yes, the 2.0 D boxer is in fact the engine with the most files on this model, including EGR and DPF services.
Which ECU does the Impreza use?
Denso or Hitachi depending on version, with SH7058 or SH7059 processors. On very old units the 68HC16 also appears.