My 2003 X-2 with the same engine burns around 30 lph (8gph) when fully loaded out for wakeboarding. Unloaded I'm around 17lph (4.5gph). I tracked fuel consumption all summer. I have the 14.25x14.5 prop with about 3000lbs of ballast. Wakeboarding I'm usually at 3700rpms when loaded.