The Chevrolet Cobalt 2.2 155hp (2008 - 2010) produces 155bhp and 203Nm in standard form. Our Stage 1 ECU tuning file raises output to 170bhp and 225Nm, a gain of 15bhp and 22Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.