The Aston Martin Vantage 4.3 V8 400hp (upto 2018) produces 400bhp and 418Nm in standard form. Our Stage 1 ECU tuning file raises output to 425bhp and 440Nm, a gain of 25bhp and 22Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.