The Mercedes-AMG E63 S is rapid from the showroom, but factory torque limits and gearbox strategies leave a lot in reserve. Stage 2 unlocks what the M177 twin-turbo V8 is truly capable of — without sacrificing daily comfort. The Numbers 🔴 Stock:  570 hp / 85.8 kg·m 🟣 Stage 2:  734 hp / 107.8 kg·m 💥 +164 hp 💥 +26% torque What Changes on the Road Earlier boost. Brutal mid-range. Stronger top-end pull. CPC recalibration removes factory intervention, while TCU optimisation i