Hello,
I recently upgraded my old 1991 19' I/O bow rider that had a 190 hp 4.3L, to a 2005 19' I/O bow rider 220 hp 4.3L MPI.
The question that I have is about effect of the prop on the plane speed of the boat. The old boat would plane out at 12-15 mph and hit a Max speed of 35-38 MPH. The new...