The Opel Astra 2.0 Turbo 170hp ((H) - 2004 - 2009) produces 170bhp and 250Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 300Nm, a gain of 30bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.