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Order This File Ask a QuestionThe Aston Martin DB9 5.9 V12 455hp (All) produces 455bhp and 570Nm in standard form. Our Stage 1 ECU tuning file raises output to 480bhp and 600Nm, a gain of 25bhp and 30Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.