The GMC Terrain 2.4i 182hp (2016 - 2017) produces 182bhp and 233Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 255Nm, a gain of 18bhp and 22Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.