Considering an ECU remap for your BMW 6 Series 640i 340hp? A Stage 1 remap can take this G3x - 2017 -> petrol engine from 340 BHP to 400 BHP and from 450 Nm to 580 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 6 Series can achieve.
The BMW 6 serie 640i 340hp is a 3.0L naturally aspirated petrol engine producing 340 BHP and 450 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 400 BHP and 580 Nm — a gain of around 60 BHP (18%) and 130 Nm (29%).
This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. 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.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
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 |
|---|---|---|---|---|---|
| 620D 190hp | 190 → 220 | +30 | 400 → 440 | +40 | Good (6.5/10) |
| 630i 258hp | 258 → 310 | +52 | 400 → 470 | +70 | Moderate (5/10) |
| 630D 265hp | 265 → 310 | +45 | 620 → 720 | +100 | Good (7/10) |
| 640D 320hp | 320 → 400 | +80 | 680 → 800 | +120 | Good (7.5/10) |
| 640i 360hp | 360 → 400 | +40 | 500 → 580 | +80 | Moderate (4.5/10) |
Get a personalised remap quote for your BMW 6 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.
