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Order This File Ask a QuestionThe Isuzu I-Seriess I-350 3.5 220hp (All) produces 220bhp and 305Nm in standard form. Our Stage 1 ECU tuning file raises output to 240bhp and 325Nm, a gain of 20bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.