BMW Z4 E85 - 2003 - 2008 2.5si 218hp
Real standard and upgraded performance figures for the 2.5si 218hp engine in the BMW Z4 E85 - 2003 - 2008.
The BMW Z4 E85 - 2003 - 2008 2.5si 218hp is one of the engines we work on regularly — here's what a stage remap typically changes for it.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 218 | 250 |
| Stage 1 | 235 | 270 |
| Stage 2 | 243 | 280 |
- Make
- BMW
- Model
- Z4
- Generation
- E85 - 2003 - 2008
- Engine
- 2.5si 218hp
- Fuel type
- Petrol
Frequently asked questions
Is Stage 1 tuning safe for the BMW Z4 E85 - 2003 - 2008 2.5si 218hp?
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 2.5si 218hp make after tuning?
Standard output is 218 HP / 250 Nm; Stage 1 on this engine typically reaches 235 HP / 270 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a BMW Z4 E85 - 2003 - 2008 2.5si 218hp 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 2.5si 218hp 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.