BMW Z4 E89 2012 onwards 35i ECO
An economy file for the 35i. Torque goes to 520Nm, which is what makes it easier to drive without revving.
Where the gain arrives
Standard against ECO through the rev range.
- Standard 306hp
- Standard 400Nm
- Remapped 520Nm
Standard against ECO
| Measure | Standard | After | Gain |
|---|---|---|---|
| Power | 306hp | n/a | n/a |
| Torque | 400Nm | 520Nm | up 120 |
No new power figure is published for an economy file. It is written for torque and drivability, not peak output.
Other files for this engine
All written for the 35i specifically.
What ECO involves
This one is aimed at running costs and how the car drives day to day. Torque comes in earlier and more evenly, so it pulls without needing revs. Driven sensibly it will usually give back a little on fuel. If you are after outright power, look at the other files above.
It takes most of a day. We keep your original file, so it can go back to standard at any point. Figures here are for a healthy 35i, and we check the car over before writing to it.
See the full 35i page for every file and figure, the other engines on this Z4, or all BMW remapping.
Other engines on this Z4
Book your Z4 ECO
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.