The Case Patriot 4420 8.3 Tier 3 294hp (All) produces 294bhp and 1383Nm in standard form. Our Stage 1 ECU tuning file raises output to 370bhp and 1730Nm, a gain of 76bhp and 347Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.