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  1. #1
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    Isle of Wight, England
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    Tohatsu 50 efi tuning and mods????

    Hi - I've got a little development project / design underway and going to be powered by a Tohatsu MFS 50 (4 stroke). (15" shaft)

    Will run this as stock to start with but them looking to get any more power / torque possible from the engine.


    I had heard someone in the States (I'm in the UK) is doing a re-map for these. Wondered if anyone had details - or other mods that can be done.

    Thanks Adam
    Last edited by Adam Younger; 05-14-2021 at 01:55 PM.

  2. #2
    Join Date
    Sep 2008
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    charlestown, ri
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    the 40 50 60 all look the same to me! meaning compare parts. i bet making it into a 60 is simply a matter of an ecu swap. not cheap! id also pay attention to the throttle body/intake. might be larger? dunno.

  3. #3
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    Oct 2020
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    Australia
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    60 is a different engine. 3 valve per cylinder, roller rockers, different pistons. 50 is 2 valve. essentially same engine different head

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