The Deutz Fahr Agrofarm 420 4.0 - 99hp (All) produces 99bhp and 380Nm in standard form. Our Stage 1 ECU tuning file raises output to 99bhp and 426Nm, a gain of 0bhp and 46Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.