The Case Magnum CVT/CVX 310 8.7 Tier 4B 311hp (All) produces 311bhp and 1531Nm in standard form. Our Stage 1 ECU tuning file raises output to 380bhp and 1830Nm, a gain of 69bhp and 299Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.