The Alfa Romeo 166 2.4 JTD 140hp (1999 - 2002) produces 140bhp and 304Nm in standard form. Our Stage 1 ECU tuning file raises output to 173bhp and 382Nm, a gain of 33bhp and 78Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.