MPG chart.

[bgreene]

Yes to all that.........and plus........if you have a working fuel gauge and know how many gallons the tank holds, refill when the gauge shows 1/2 full.

This way you'll know approx. how accurate it is.......if you have a 60 gal tank and it refills taking 30 gallons, well then your gauge is accurate.

Do it again when it shows 1/4 tank and see if it's still reading accurately.....and takes approx. 45 gallons to refill.

[THEFERMANATOR]

Most all the flow sensors will work with the efi outboards with 2 pumps except for some yamaha's. Some yamaha's don't run the low pressure all the time, but instead pulse it. The total fuel used will be correct, but the gph at any given time will be off. Just about ANY engine can have a fuel flow meter on it. I had one on my old 85 140 evinrude. Loved having that floscan, really changed how I ran the boat as what I thought was optimal speed wasn't. Found it liked to go alot faster than I'd guessed to get the best economy.

[tartuffe]

My offshore trolling trips cover an average of 110-130 miles. With a 200 hp 2-stroke I burn a very consistent 1.8 miles to the gallon. Given winds, current, and seas, there are so many variables to try and calculate from charts. I find the conditions are my speedometer more than anything else. Fuel consumption is easily forgotten when that massive thunder head pops up out of nowhere.