The Aston Martin DB11 5.2 V12 Twinturbo 639hp (2016 ->) produces 639bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 740bhp and 1050Nm, a gain of 101bhp and 350Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.