I'm thrilled with my 300hp Etec. I'm assuming you are asking about replacing the Yamaha because you are having trouble with it. If not, I would agree with the other posts. Don't replace a working motor. That said, if you're looking for a replacement the 300hp Etec has been great to me. I can hit 50 mph in my Tsunami and used to surpass it before adding my hardtop. I cruise around 27 mph and get between 2 and 2.5 mpg according to the Garmin. I would expect to do much better with a CC. I've got a lot of weight in the Tsunami with two helm seat boxes and a deep full beam storage bench across the transom. The motor is also on a Hermco bracket.
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1973 23' Tsunami, 300hp Etec
Norwalk, CT
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