BMW Z4 E85 2007 onwards 3.5i - N55 Twinscroll remap
Standard this engine makes 306hp and 400Nm. Our STAGE 2 file takes it to 370hp and 540Nm.
Where the power arrives
Power and torque through the rev range, on the STAGE 2 file.
- Standard 306hp
- Remapped 370hp
- Standard 400Nm
- Remapped 540Nm
Stages for this engine
Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.
Every figure for the 3.5i - N55 Twinscroll
| File | Power | Gain | Torque | Gain | Price |
|---|---|---|---|---|---|
| Standard | 306hp | n/a | 400Nm | n/a | n/a |
| ECO | n/a | n/a | 520Nm | up 120 | £690 |
| STAGE 1 | 350hp | up 44 | 520Nm | up 120 | £790 |
| STAGE 2 | 370hp | up 64 | 540Nm | up 140 | £988 |
Economy files show no new power figure because they are written for torque and drivability rather than peak output.
Remapping the 3.5i - N55 Twinscroll
The BMW Z4 E85 2007 onwards 3.5i - N55 Twinscroll runs a factory calibration built to cope with poor fuel, skipped servicing and hot countries. We rewrite the fuelling, boost and timing for this engine on this car, then test it before you get it back. The original file is kept, so it can go back to standard whenever you want.
On the petrol side the difference shows in throttle response and in how hard it pulls through the top half of the rev range. It feels sharper off idle and keeps going where it used to flatten out.
Figures on this page are for a standard car in good health. We read the fault codes and check the basics first, and if something needs attention we will tell you before we write anything. Have a look at the other engines on the E85 2007 onwards, the full Z4 range, or everything we do for BMW.
Other engines on this Z4
E85 2007 onwards cars.
- 2.0i150hp standardPetrol
- 2.0i163hp standardPetrol
- 2.2i170hp standardPetrol
- 2.5i177hp standardPetrol
- 2.0i184hp standardPetrol
- 2.5i192hp standardPetrol
- 2.3i204hp standardPetrol
- 2.5i211hp standardPetrol
- 2.5i218hp standardPetrol
- 30231hp standardPetrol
- 3.0i258hp standardPetrol
- 3.0i SI265hp standardPetrol
- 3.5i - N54306hp standardPetrol
- 3.5is - N54340hp standardPetrol
- M 3.2343hp standardPetrol
Similar power, other makes
Cars running about the same standard output, for comparison.
Other Z4 generations
Book your Z4
We write and test every file at our Aston workshop, on our own rolling road. Ring us with your reg and we will tell you what your car should make before you commit to anything.