Does anyone know if you can simply add 10, 20, or 50 gallons to the tank with the Yamaha kit? Or, do you need to top-off the tank FULL every time to keep the calibration numbers accurate?
I am asking because (1) I a not familiar with the Yamaha unit, and (2) as 'some' fuel computers must be topped off EVERY fill or the numbers (for range and remaining) are invalid.
FWIW the Navan/Northstar series, starting @ ~$100, allow you to add whatever quantity you want. That is super for me since I ferry my fuel in 2 to 4 five-gallon jerry jugs. At the end of the season I get a full readout of gallons used, miles run, and average consumption as MPG. Nice data!
Add back the Mass $0.21 fuel excise tax rebate/refund for road-fuel taxes paid, but used in a boat ... and I get enough $$ to buy some cool fishing stuff!