BMW Z4 E85 - 2003 - 2008 2.5i 177hp
Real standard and upgraded performance figures for the 2.5i 177hp engine in the BMW Z4 E85 - 2003 - 2008.
This page covers the 2.5i 177hp as fitted to the BMW Z4 E85 - 2003 - 2008 — the figures below reflect that specific engine, not the model as a whole.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 177 | 230 |
| Stage 1 | 193 | 255 |
| Stage 2 | 201 | 267 |
- Make
- BMW
- Model
- Z4
- Generation
- E85 - 2003 - 2008
- Engine
- 2.5i 177hp
- Fuel type
- Petrol
Frequently asked questions
Is Stage 1 tuning safe for the BMW Z4 E85 - 2003 - 2008 2.5i 177hp?
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 2.5i 177hp make after tuning?
Standard output is 177 HP / 230 Nm; Stage 1 on this engine typically reaches 193 HP / 255 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a BMW Z4 E85 - 2003 - 2008 2.5i 177hp 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 2.5i 177hp 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.