The Opel Astra 2.2 DTI 125hp ((G) - 1998 - 2004) produces 125bhp and 280Nm in standard form. Our Stage 1 ECU tuning file raises output to 150bhp and 320Nm, a gain of 25bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.