Final update boat is running great again the high tpm was my tach acting up. After a few test runs with my gps ready this time. Wot was 5100:rpm half tank gas just me alone on board. I got 30 knots on the gps . I did not dare keep it at that rpm for too long just testing purpose . I knew something got to wrong next at 4000 rpm the boat was not hauling azz the way it use to thats when i bang on the tach and it fell from 4000 rpm to about 2900 rpm thats more like it. This time i took it for another run and at. 4600rpm i got 29 knots on the gps. At 2900 rmp i got 13 knots on the gps. So my guess am good right there am thinking maybe. A 15×16 prop wud be better with four huys on the boat. . Thanks yall be bless
