More opinion for you;
I have a 265 w/ 2 x 200 HPDI's, love the boat and love the motors, best I have dialed in is about 2.1-2.2 mpg at relatively moderate cruise, would say I avg 1.8-1.9 mpg best for general use (varying rpm range through day), likely about 1.6-1.7 mpg when zipping along at...