The Vauxhall Meriva 1.7 DTI 75hp ((A) - 2003 - 2010) produces 75bhp and 165Nm in standard form. Our Stage 1 ECU tuning file raises output to 105bhp and 215Nm, 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.