2021 Tohatsu 9.9 to 20 hp conversion

Tracker28

Recruit
Joined
Mar 25, 2021
Messages
1
Has anyone had luck with this? I was told that this conversion can easily be accomplished by swapping out the ECU’s and removing the restrictor plate from the 9.9.
Has this been true for anyone? If so, did you run into any issues later on?
 

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,559
Yes, that is the upgrade procedure. You may need a different gasket at the restrictor. Otherwise, they are identical motors.
 
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