LOW TOP SPEED RPM`S 225 efi
22 ft Kenner bayboat with a 2001 Mercury 3.0 225 efi with 4 butter flys (boat is only rated for a 200 hp engine) it has never turned over 5000 rpm`s since I purchased boat used a few years ago. It comes out of the hole great and runs perfert to 5000 rps but no higher even with the motor trimmed out. I have now just install chris carson reeds, block stuffers , had chris carson clean and check injectors, dropped down from a four blade 20 pitch to a three blade 19 pitch prop. New fuel filters, new QL77CC plugs, stator and added 300 ecu fuel and 300 ignition modules. Boat still runs the same 5000 max rpm as before the changes. (Engine should turn 6000 plus rpm now due to actually running a under size prop pitch size):mad::mad::mad: HELP !!!!!!