Bayliner Capri 18 foot 3 inch with a 3.0l runing a 14 and 3/8" X 21 prop. Lightly loaded doggy hole shot running 5100rpms. Will check gps on speed this weekend. But if the tach is correct my rps are too high. Kinda of surprsing on a 3.0l engine. Wonder if my tach is off. I want better hole...