BMW 3 serie E90/E91 - 2005 - 2010 320si 173hp
Real standard and upgraded performance figures for the 320si 173hp engine in the BMW 3 serie E90/E91 - 2005 - 2010.
These are real standard and Stage 1 (and where available, Stage 2) figures for the BMW 3 serie E90/E91 - 2005 - 2010 320si 173hp — not a generic estimate for the model range.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 173 | 200 |
| Stage 1 | 185 | 220 |
| Stage 2 | 191 | 230 |
- Make
- BMW
- Model
- 3 serie
- Generation
- E90/E91 - 2005 - 2010
- Engine
- 320si 173hp
- Fuel type
- Petrol
Frequently asked questions
Is Stage 1 tuning safe for the BMW 3 serie E90/E91 - 2005 - 2010 320si 173hp?
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 320si 173hp make after tuning?
Standard output is 173 HP / 200 Nm; Stage 1 on this engine typically reaches 185 HP / 220 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a BMW 3 serie E90/E91 - 2005 - 2010 320si 173hp 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 320si 173hp 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.