Subaru Impreza Stage 1
6 engines – 150–300 hp
6
engines
+36 hp
Max gain
+14%
Avg. gain
✓
Eco Tuning
2003 - 2005
2 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 2.0T WRX 225hp | Petrol | 225 | 261 | +36 (16%) |
| 2.0T WRX STi 265hp | Petrol | 265 | 296 | +31 (12%) |
2008 ->
4 engines
| Engine | Fuel | Stock (hp) | Stage 1 (hp) | Gain |
|---|---|---|---|---|
| 2.0T 268hp | Petrol | 268 | 302 | +34 (13%) |
| 2.5T WRX 230hp | Petrol | 230 | 263 | +33 (14%) |
| 2.0 D Boxer 150hp | Diesel | 150 | 182 | +32 (21%) |
| 2.5T WRX STI 300hp | Petrol | 300 | 331 | +31 (10%) |
FAQ
Is Stage 1 safe for the engine?+
Yes, Stage 1 is a mild optimization within factory safety margins. We use dealer-level equipment and verify results on a dyno.
How long does it take?+
Usually 2–4 hours, including diagnostics, remapping, and a control measurement on our dynamometer.
Does it affect fuel consumption?+
Stage 1 can reduce consumption (better torque curve) or slightly increase it under aggressive driving. On average, consumption stays the same.