fastest stock 50hp motor to buy

[saute86]

Originally Posted by CajunChristian

When the current stock of Tohatsu TLDI's are gone, that's it. Stock motors will all run very close on equal boats. EVERY manufacturer must follow NMMA guidelines for horsepower ratings. 2 strokes will be a thing of the past except for E-Tec and that is useless.
Now if you want the 50 that is most easily upgraded, the Mercury and the Yamaha have identical specs. The ecu programming is a tad different, everything else is the same. The ecu can be reflashed to 60hp on both outboards. They are both 61 cubic inch 4 cylinder motors. To say one is superior, nahhh, not really. Those 2 would be the most easily upgraded. The problem is the weight, they are above the 250 pound mark for both motors. Both are available only in 20" shaft.
Tohatsu just released their new 3 cylinder, 53 cubic inch, 40/50. It is available in short or long shaft, weighs 208 pounds.
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Sorry to high jack the post but how do you reflash an ecu. Does it make much difference on a Yamaha.

[CajunChristian]

Originally Posted by saute86

Sorry to high jack the post but how do you reflash an ecu. Does it make much difference on a Yamaha.

Depends on which Yamaha you have. On the 4 cylinder 50, it reflashes to a 60, that makes 10hp difference or about 2 mph on a loaded duck boat. The ecu must be removed and shipped to California, he reflashes and sends it back.
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