BMW 5 serie E39 - 1995 - 2003 523i 170hp
Real standard and upgraded performance figures for the 523i 170hp engine in the BMW 5 serie E39 - 1995 - 2003.
Below: measured output for the 523i 170hp in the BMW 5 serie E39 - 1995 - 2003, standard vs. remapped, in both horsepower and torque.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 170 | 245 |
| Stage 1 | 187 | 272 |
| Stage 2 | 195 | 285 |
- Make
- BMW
- Model
- 5 serie
- Generation
- E39 - 1995 - 2003
- Engine
- 523i 170hp
- Fuel type
- Petrol
Frequently asked questions
Is Stage 1 tuning safe for the BMW 5 serie E39 - 1995 - 2003 523i 170hp?
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 523i 170hp make after tuning?
Standard output is 170 HP / 245 Nm; Stage 1 on this engine typically reaches 187 HP / 272 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a BMW 5 serie E39 - 1995 - 2003 523i 170hp 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 523i 170hp 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.