1981 Motor Boating Magazine v20 with Merc 200hp

[THEFERMANATOR]

DFI's equalled the field out so it brought you down closer to the 1 GPH per 11-13HP across the RPM range. The old rule of thumb for carbed 2 strokes was they would burn 1 GPH for every 10HP they put out. My 140 burned right around 13-15 GPH, my 225 was around 23-25(but it was putting out closer to 250 with porting, so right on track for the 1=10 rule). At cruise you used to go to the north side of this number, but many engines were ALOT higher. DFI's and 4 strokes maintain this balance across the RPM band pretty linearly. So if a hull takes say 120HP to run at 30MPH, a 150/175/200 will all be pretty close to 10GPH fuel burn. I know that with lean burn engines nowadays, they are doing even better than the 1=12 rule.