Description
2026 Mercedes G63 ECU tuning.
Published factory figures: 544 HP, 560 TQ.
Stage 1: 665 HP, 752 TQ, Stock exhaust.
Stage 2: 685 HP, 772 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; burble adjustment where available; flame option.
Mail the ECU for programming. Instructions are emailed after checkout; include the completed ECU Information form downloadable from the homepage.
The source states a 2-day turnaround.
