i got my boat back yesterday and it now has a new yamaha 60 four stroke on it i put it in the water today and was not dissapointed it went great . I was told that going back from a 90 2 stroke iwould notice the differance but i was surprised the mid range speeds were about equil top end only lost 4 to 5 kms per hour ran a quick spurt 5700 revs not quite full noise 57 km ph hole shot was as good iff not a little more crisp u have to love fuel injection
ps did i mention no smoke or noise never go back to 2 stroke