Mercedes-AMG S63 (W222 2018-20) ECU Tune

Custom OEM-ECU calibration for the Mercedes-AMG S63 (W222 2018-20). Factory output is 603 hp and 664 lb-ft; Stage 1 takes it to 720 hp and 830 lb-ft — a gain of 117 hp and 166 lb-ft — with no hardware changes required. Stage 1 — 720 hp / 830 lb-ft. Stock exhaust, stock intake. Nothing to buy. Stage 2 — 760 hp / 873 lb-ft. With downpipes or a sports exhaust fitted. Remote — your car never leaves your garage. We ship you the tuning tool, you plug it into the OBD port, and we flash the calibration by email. The ECU is never removed.Every file is built and signed off individually against your own datalog, not pulled from a shelf. One free revision for 30 days — change your exhaust or your fuel and we update the calibration at no charge. Emissions equipment is not touched.Figures are estimates at the crank for a healthy car on good fuel. Real-world results vary with vehicle condition, fuel quality, dyno type and ambient conditions.