BMW Serie 8 G15 2018 onwards xDrive 40d remap
Standard this engine makes 320hp and 680Nm. Our STAGE 1 file takes it to 400hp and 800Nm.
Where the power arrives
Power and torque through the rev range, on the STAGE 1 file.
- Standard 320hp
- Remapped 400hp
- Standard 680Nm
- Remapped 800Nm
Stages for this engine
Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.
Remapping the xDrive 40d
The BMW Serie 8 G15 2018 onwards xDrive 40d 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.
Diesels like this one gain most through the middle of the rev range, which is where you actually drive. It pulls from lower down, holds a gear on a hill, and needs fewer downshifts to overtake. Drive it the same way afterwards and the economy usually improves a little.
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 G15 2018 onwards, the full Serie 8 range, or everything we do for BMW.
Other engines on this Serie 8
G15 2018 onwards cars.
Similar power, other makes
Cars running about the same standard output, for comparison.
Book your Serie 8
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.