Description
2026 BMW M5 ECU tuning.
Published factory figures: 727 HP, 737 TQ.
Stage 1: 800 HP, 810 TQ, Stock exhaust.
Stage 2: 820 HP, 830 TQ, Downpipes Required.
DME retains the original ECU calibration for returning the vehicle to stock. The calibration changes throttle response and torque management.
Listed functions: octane-specific calibration; downpipe (off-road use only); speed-limiter changes; cold-start control; burble adjustment where available; flame option; neutral rev-limiter removal; higher sport-display HP/TQ readouts.
A shipping label is supplied after purchase.
Advertised unlock turnaround: 2 business days.
The advertised package includes unlocking, tuning and shipping, plus insurance.
Disable iDrive automatic updates: Car > Settings > General Settings > Data Privacy > No Service. Decline app updates; Updates can relock the ECU and erase the tune/unlock.
