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Order This File Ask a QuestionThe Case Magnum 250 8.3 CR 252hp (All) produces 252bhp and 1271Nm in standard form. Our Stage 1 ECU tuning file raises output to 320bhp and 1600Nm, a gain of 68bhp and 329Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.