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Order This File Ask a QuestionThe Case STX 480 14.9 492hp (All) produces 492bhp and 2000Nm in standard form. Our Stage 1 ECU tuning file raises output to 620bhp and 2500Nm, a gain of 128bhp and 500Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.