Re: 25hp johnson
We'll need to know your present performance max rpm and speed. and prop size.
(on the barrel or under the prop nut)A Tinytach is about $47 and easy to install,
a GPS for speed. Is it a tiller motor?
Is the boat a full sized 14? (usually a little over 14)nice and wide.
Raise the motor to a point you can see the antivent plate (just above the prop) at speed.In the extreme this could net 2 to 3 mph.Be sure the throttle opens all the way.Well tuned. Carefully adjust trim
