McLaren Artura (2025+) ECU Tune

Custom OEM-ECU calibration for the McLaren Artura (2025+). Factory output is 690 hp and 531 lb-ft; Stage 1 takes it to 800 hp and 666 lb-ft — a gain of 110 hp and 135 lb-ft — with no hardware changes required. Stage 1 — 800 hp / 666 lb-ft. Stock exhaust, stock intake. Nothing to buy. Stage 2 — 820 hp / 686 lb-ft. With downpipes or a sports exhaust fitted. Mail-in ECU. You remove the ECU using the instructions we email you and ship it to us. We flash it on the bench and send it straight back, normally within 24–48 hours of arrival. The car stays in your garage the whole time.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.