Mercedes-AMG G-Class | ECU Tunes
G63 AMG ECU tunes for the M177 4.0T V8 (W463A) — Stage 1 through Stage 3+ calibrations. The G63’s M177 runs conservative factory maps to manage drivetrain loads, so a Stage 1 remap unlocks 80–100 WHP with zero hardware changes. Upgraded turbo builds push the platform past 800 WHP. Remote OBD flash and mail-in bench tuning both available.
