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hello everyone trying to find out why my new boat is a dog. I have a 2007 5.7L 250 hp with the boat empty no gear/water on board at all half a tank of fuel I was able to reach 4300 rpm and get up to 23 knots now with fuel tank f fuel and about 25 gallons of water I can barley make 3800rpm and 15...

Hello all So I got the boat in the water and I get an alarm while trying to cruise if I keep it under 1500 rps no alarm if I run it up to 3500 rpm the sound is intermittent. The temp gage stays under 180 but fluctuates between 165-180 and the alarm goes off even when the gage reads 165 so I...

hello new to the site and new owner of a 87 268 da with a 5.7 250hp just wondering what to expect on speed and fuel economy does have trim tabs