The Mercury Mariner 3.0 V6 240hp (2005 - 2012) produces 240bhp and 316Nm in standard form. Our Stage 1 ECU tuning file raises output to 260bhp and 335Nm, a gain of 20bhp and 19Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.