Get the most out of your Mercury 25 hp EFI 3 Cyl 4 stroke
My Merc 25 hp EFI 3 Cyl 4 stroke has always been lacking in power to get my boat up on plain. This is how I fixed the problem. This motor is on a heavy 14 FT fishing boat, with floor, live well, power tilt, elect stare and etc. It...