I NEED SOME HELP !!!!!!!!!!!!
I have a 25ft baja that had a stock 330hp 454 last year that ran 69 mph at 4950rpms with a 23p three blade prop...
This year I now have 250 power charger with a dean nickerson 980cfm carb and a merc V-6 ING. running 5pd boost with a 26p four blade prop thats showing 58mph at 5200rpm just past half throttle with no triming .. we put a tach style timming light on it . and the two tachs are very close .. and the prop a solid hub ...but the boat still shows to be turn to many rpms ... please help if you can thanks