The Fiat Stilo 1.9 JTD 100hp (2001 - 2007) produces 100bhp and 200Nm in standard form. Our Stage 1 ECU tuning file raises output to 135bhp and 265Nm, a gain of 35bhp and 65Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.