Subaru Impreza 2008 -> 2.5T WRX STI 300hp
Real standard and upgraded performance figures for the 2.5T WRX STI 300hp engine in the Subaru Impreza 2008 ->.
This page covers the 2.5T WRX STI 300hp as fitted to the Subaru Impreza 2008 -> — the figures below reflect that specific engine, not the model as a whole.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 300 | 407 |
| Stage 1 | 330 | 467 |
| Stage 2 | 345 | 497 |
- Make
- Subaru
- Model
- Impreza
- Generation
- 2008 ->
- Engine
- 2.5T WRX STI 300hp
- Fuel type
- petrol
Frequently asked questions
Is Stage 1 tuning safe for the Subaru Impreza 2008 -> 2.5T WRX STI 300hp?
Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.
How much more power does the 2.5T WRX STI 300hp make after tuning?
Standard output is 300 HP / 407 Nm; Stage 1 on this engine typically reaches 330 HP / 467 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a Subaru Impreza 2008 -> 2.5T WRX STI 300hp remap take?
Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.
Can the 2.5T WRX STI 300hp be reverted to its original file?
Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.