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Order This File Ask a QuestionThe Case MX 270 8.3 279hp (All) produces 279bhp and 1258Nm in standard form. Our Stage 1 ECU tuning file raises output to 340bhp and 1540Nm, a gain of 61bhp and 282Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.