BMW Serie 8 ECU remapping
100 files available
About remapping
Looking to remap your BMW Serie 8? We have 100 files for the BMW Serie 8, covering 21 engine variants. Remapping optimises the ECU's original map to gain power and torque and sharpen response, keeping reliability and being fully reversible.
The table below shows the BMW Serie 8 engines we have files for, along with the ECUs they use. Drivers can request a quote for their Serie 8; professionals can log in to download the file instantly.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| 850 CSI | Petrol | 380 hp | 400 hp +20 | — |
| 850 CI | Petrol | 326 hp | 344 hp +18 | — |
| 40d (3.0) | Diesel | 320 hp | 392 hp +72 | — |
| 850i | Petrol | 300 hp | 320 hp +20 | — |
| 840 CI 4.0l | Petrol | 286 hp | 305 hp +19 | — |
| 840 CI 4.4l | Petrol | 286 hp | 305 hp +19 | — |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
850i
ECUs
Generations covered
ECU manufacturers
Available services
Remapping services
Stage 1
Optimising the original map with no hardware changes: more power and torque, full reliability.
Speed limiter removal
Removal of the factory speed limiter.
Stage 2
Remap for vehicles with mechanical upgrades (intake, exhaust, intercooler…).
Pops & bangs
Pops & bangs exhaust effect (on lift-off and gear changes).
Why remap with Repromatronic
- ✓More power and torque with engine-safe tuning
- ✓Sharper throttle response and nicer driving
- ✓Potential fuel savings in normal driving
- ✓Files built from the original and 100% reversible
- ✓Made by technicians with thousands of projects behind them
Are you a driver?
Request a free quote for your vehicle and we'll tell you the gains you can expect.
Request a quoteAre you a workshop or professional?
Sign up, buy credits and download the optimised file instantly.
Log in as a professionalFrequently asked questions
How many remap files are there for BMW Serie 8?
We currently have 100 files for BMW Serie 8, ready to download or request. The library grows constantly with new projects.
Which services can be applied to BMW Serie 8?
Depending on the engine: Stage 1 and Stage 2 power tuning, EGR, DPF and AdBlue/SCR off, speed-limiter removal, pops & bangs and DTC delete. Each entry shows exactly what is available.
Is BMW Serie 8 remapping reversible?
Yes. We always keep the original file, so the vehicle can be returned to factory state at any time.
How much power do you gain remapping a BMW Serie 8?
It depends on the engine, but a Stage 1 remap usually adds 15–30% more power and torque, always within the engine's safe limits. We give you the exact figures for your engine when you request a quote.
Does remapping affect fuel economy or reliability on a BMW Serie 8?
A proper remap improves throttle response and can reduce consumption in normal driving. We always work within the engine's limits to keep reliability.
I'm a driver / a workshop — how do I get my BMW Serie 8 file?
Drivers can request a free, no-obligation quote. Workshops and professionals sign up, buy credits and download the optimised file instantly.