Re: 1997-2001 Yamaha 225 EFI
My 250 OX66 w/bracket on the avatar boat gets 2-2.25 mpg........if don't keep it on the pin. That's calculated, no flow meter. Obviously an HPDI or 4S will be better on fuel. The order would be (worst to best) carb., EFI,
4s-HP EFI. IB diesel would probably be best. I know a couple of guys with Yam. 150 4S getting 4-5 mpg on 21' boats. The Yam. OX66 motors are VERY reliable.
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