Speed is very important but many other factors affect fuel usage. Boat trim, propeller, engine condition, and hull condition all are important. With a fuel computer you can see the effect of a change in trim tab angle or a shift in the load. Marine engines operate under continuous high loads for a much higher proportion of the time than engines in cars. At these high loads, engine equipment deficiencies can chew up a lot of extra fuel until they are discovered and remedied.
Monitors engine and drive train condition.
FloScan Fuel Computers help spot problems before they become emergencies that could either leave you dead in the water or cost a lot of money. If you notice a sudden increase in fuel flow rate, especially on one engine in a twin engine boat, one of the first things to inspect is the prop on the offending engine. Or, as discussed above, a fouled spark plug could be the problem. Whatever the problem turns out to be, a FloScan Fuel Computer is a valuable tool to first identify and then solve it. A FloScan Fuel Computer can even save your life.