The Case Farmall 105U 3.4 Tier 4A 106hp (All) produces 106bhp and 425Nm in standard form. Our Stage 1 ECU tuning file raises output to 135bhp and 520Nm, a gain of 29bhp and 95Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.