Data under review — The figures shown for this engine variant are currently being verified. They may be updated as we refine our data.
Considering an ECU remap for your BMW 8 Series M850i 530hp? A Stage 1 remap can take this G15 - 2018 -> petrol engine from 530 BHP to 660 BHP and from 750 Nm to 880 Nm of torque (naturally aspirated). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW 8 Series can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW 8 serie M850i 530hp is a 4.4L naturally aspirated petrol engine producing 530 BHP and 750 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 660 BHP and 880 Nm — a gain of around 130 BHP (25%) and 130 Nm (17%).
This engine has moderate remap suitability, with gains weighted towards peak power — the improvement is most noticeable at higher RPM. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted); manuals also exist. at this torque level, transmission and driveline servicing history becomes especially important..
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. High tuned torque: check transmission torque capacity and service history.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 840d 320hp | 320 → 400 | +80 | 680 → 800 | +120 | Good (7.5/10) |
| 840d 340hp | 340 → 380 | +40 | 700 → 750 | +50 | Limited (3.5/10) |
| 840i 340hp | 340 → 400 | +60 | 500 → 580 | +80 | Moderate (5/10) |
Get a personalised remap quote for your BMW 8 Series. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
