The Pontiac Sunfire 2.4i 150hp (1997 - 2005) produces 150bhp and 210Nm in standard form. Our Stage 1 ECU tuning file raises output to 170bhp and 230Nm, a gain of 20bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.