DME Tuning ECU calibration for BMW 840i 2020. Select the stage that matches your vehicle and installed hardware.
Tuning stages
| Calibration |
Horsepower (HP) |
Torque (TQ) |
Hardware / configuration |
| Factory |
335 |
332 |
Factory calibration |
| Stage 1 |
420 |
447 |
Stock exhaust |
| Stage 2 |
450 |
475 |
Downpipes Required |
Performance figures are as listed by DME Tuning. Torque follows the source TQ label.
Listed calibration features
- Fuel-octane-specific calibration.
- Downpipe-related check-engine-light calibration, listed by DME for off-road use only.
- Speed-limiter calibration where supported.
- Cold-start settings.
- Exhaust burble adjustment where supported.
- Original ECU settings are retained to support a return to stock.
Programming and requirements
- The ECU must be sent in for programming or unlocking.
- Include the completed DME ECU information form with the ECU shipment.
- DME lists programming on the day the ECU is received.
- DME assigns inbound and return ECU shipping costs to the purchaser.
- DME lists FedEx Overnight for the return ECU shipment.
The vehicle VIN is required to arrange the correct calibration.
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