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Order This File Ask a QuestionThe Case STX 530 14.9 543hp (All) produces 543bhp and 2000Nm in standard form. Our Stage 1 ECU tuning file raises output to 653bhp and 2400Nm, a gain of 110bhp and 400Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.