[Bushwacker]

FloScan makes a very accurate aerospace quality flowmeter and totalizer, but the I-Command system, which gets fuel flow from the EMM on the motor, is almost as good. On my St. Johns River trip a couple years ago, we had trouble finding a marina with gas, and I refueled with only about 3 gallons left in the tank! With the E-Tec, I can get 10 mpg if I slow down to hull speed, and I was about ready to do that, but I had to run fast to get to the only marina that had gas before it closed!

The Floscan exactly matched the actual gallons used, and the I-Command was within 0.1 gallon of the Floscan! I-Command will display a lot more info however, such as instantaneous mpg, gallons remaining, range on remaining fuel, water temperature & pressure, engine hours, as well as trim position and throttle opening in % of max. All that info is really handy on a long trip in helping you optimize trim and throttle for best mpg, etc. The Floscan in a great unit, but mine finally crapped out after about 25 years, and it's an obsolete unit that I haven't been able to find parts for.

In terms of bang for the buck, I think it's hard to beat the OEM systems that tie into engine computer!