BMW 1 serie E87 - 2007 - 2011 135i - N55 - twinscroll 306hp
Real standard and upgraded performance figures for the 135i - N55 - twinscroll 306hp engine in the BMW 1 serie E87 - 2007 - 2011.
Below: measured output for the 135i - N55 - twinscroll 306hp in the BMW 1 serie E87 - 2007 - 2011, standard vs. remapped, in both horsepower and torque.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 306 | 400 |
| Stage 1 | 365 | 520 |
| Stage 2 | 385 | 540 |
- Make
- BMW
- Model
- 1 serie
- Generation
- E87 - 2007 - 2011
- Engine
- 135i - N55 - twinscroll 306hp
- Fuel type
- Turbo-Petrol
Frequently asked questions
Is Stage 1 tuning safe for the BMW 1 serie E87 - 2007 - 2011 135i - N55 - twinscroll 306hp?
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 135i - N55 - twinscroll 306hp make after tuning?
Standard output is 306 HP / 400 Nm; Stage 1 on this engine typically reaches 365 HP / 520 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a BMW 1 serie E87 - 2007 - 2011 135i - N55 - twinscroll 306hp 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 135i - N55 - twinscroll 306hp 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.