The Fiat Stilo 2.4i 20v 170hp (2001 - 2007) produces 170bhp and 221Nm in standard form. Our Stage 1 ECU tuning file raises output to 185bhp and 240Nm, a gain of 15bhp and 19Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.