The Infiniti G37/M37 3.7 V6 320hp (All) produces 320bhp and 360Nm in standard form. Our Stage 1 ECU tuning file raises output to 350bhp and 385Nm, a gain of 30bhp and 25Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.