The Case Maxxum 135 4.5 Tier 4A 135hp (All) produces 135bhp and 605Nm in standard form. Our Stage 1 ECU tuning file raises output to 165bhp and 690Nm, a gain of 30bhp and 85Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.