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Order This File Ask a QuestionThe McLaren 570GT 3.8 V8 570hp (All) produces 570bhp and 600Nm in standard form. Our Stage 1 ECU tuning file raises output to 620bhp and 680Nm, a gain of 50bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.