I recently aquired 25 ft walk-around cudy with Mercury 250 EFI (1995 with less than 150 hrs). The engine is burning about 22 gallons per hour @ 30MPH at 4200 rpm. A freind of mine with a similar boat with 1999 Optimax 225 only burns 5 gallons per hour under the same conditions.<br /><br />Is the fuel economy on the EFY that much more than the Optimax (400% more) or is there something wrong with my 250 EFI?<br /><br />Any feedback or possible fixes would be appreciated.