Better info will follow from other members.
For now, 30-34 gph at 3200 rpm will be close.
The faster you go the more fuel you will burn.

 

Is that total, or per engine? (Sorry if that's a stupid question...)

 

Total

 

That makes sense. I only have 20 hours on her so far, and under varying conditions, at various running speeds, and with fuel gauges that seem somewhat non-linear, so it's been hard to estimate what I'm actually seeing, but that sounds in the right ballpark.

Thanks to you both!

 

Imagine burning 60 gph. In my area that would b roughly 300 $an hour .

 

Boat test.com has the actual test results for the 1997 330 with MPI, register and then search for the test on the 330. At 3000 RPM it states 28 GPH and at 3500 RPM it is 32 GPH

 

I actually looked on boattest.com originally, but could not find it. When I just searched for 330, I managed to find it. Those numbers were exactly what I was looking for. Thanks!

 

Too much... about max .8 MPG at cruise depending on your bottom condition, and sea state. We plan our trips carefully...