The Opel Astra 1.6 CDTi Bi-Turbo 160hp ((K) - 2015 - 2018) produces 160bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 190bhp and 400Nm, 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.