The Maserati Quattroporte 4.7 V8 440hp (2004 - 2012) produces 440bhp and 490Nm in standard form. Our Stage 1 ECU tuning file raises output to 460bhp and 510Nm, a gain of 20bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.