fuel economy

Hello this is my first year with “my” new 2005 290 AJ it has twin 5.0 mpi’s. I’m winding how my fuel use compares and if I have any sort of problem. Boat is running great and seems to be normal speed for rpm’s etc. at 32-3500 rpm’s I’m going around 25-28 mph. WOT I’m getting 4200-4400 rpm’s and...

I got a 89 Sea Ray 300 Sundancer with 2x 5.7 350. Can anyone tell me the best RPMs for good fuel economy at hull speed and on plane? I read that anything under 1000 rpm is good for slow speed and anything between 2700 and 3000 is best while on plane for this size boat. I am thinking on...

Does anyone have experience with fuel consumption monitoring systems? I am looking to install on my 280 Sundander, with 4.3 Merc IOs. Any input would be appreciated. I am thinking about this for two reasons: 1) for optimizing fuel consumption with different loads/conditions, 2) if engines are...

I have a 2007 290 Amberjack with T-350 Mag MPI Bravo III (about 75 hours). I bought the boat used this year and have only put about the last 10 hours on it, but have a question about fuel economy. Based on gage readings it appears the port engine uses fuel at a faster rate. Also, at my first...