Mr. Bug, you are correct my ol 225 EFI gets just at 2 mpg when the water is smooth. The 300 eTec numbers mentioned seem quite a bit low. The below is a copy/paste from the Maverick Boat Co. forum for guy who's running a 300 Yamaha V-6 on a 23' Pathfinder Deep V. I've seen the boat in person and it's VERY nice looking outfit with the 300 and seems to run effortlessly. I'm thinking the 300 eTec should be much closer to 4 mpg. My two cents....
Pathfinder 23DV
"The F300 is a stellar engine. The SDS props are totally silent. It is smooth, quiet, efficient and strong as an Ox ! The power above 3500rpm is hard to describe. The 19 pitch SWS prop is perfect with the new lower unit ratio. WOT speed is 57 light, and at 3300 I cruise at 27mph, & 4.0 mpg.
Excellent numbers for a 4500 lb deep vee !!"
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