The Chevrolet HHR 2.0 Turbo 260hp (2005 - 2011) produces 260bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 285bhp and 400Nm, a gain of 25bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.