The Vauxhall Astra 1.6 Turbo 200hp ((K) - 2015 - 2018) produces 200bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 225bhp and 360Nm, a gain of 25bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.