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  1. #1
    m5vip's Avatar
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    GP1300R Premix ratio recommendation

    Just wondering whether to go 40:1 or 50:1 on the premix ratio. Ski is pretty stock except for a D-plate, intake, and an efi controller.


  2. #2
    improvised tmg97gp's Avatar
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    40.1

  3. #3
    Moderator RX951's Avatar
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    welcome to the forum

    40:1

  4. #4

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    anything negative about going 32 to 1 ?

  5. #5
    canadaxp's Avatar
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    It will cost you more in oil. I remember reading it can also make you run lean, as the fuel will not burn as well.

  6. #6
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by harleyboy61 View Post
    anything negative about going 32 to 1 ?
    makes better power at 40:1

  7. #7

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    if stock at WOT is 50:1 why does everyone recommend 40:1??? just seems like a waste of oil.

  8. #8
    Mik72e's Avatar
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    40:1 on my ported GP1300R that use to run 81mph i can tell you how safe it is i run my ski in a race that went for 28miles through a river at WOT i your hand does not come off teh throttle at all.

    So 40:1 is the way to go oil choice for me wae AMSOIL Intercepter

  9. #9
    Mike xsockguyx's Avatar
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    Yamaha has a stock GPR set lean. Like everyone here 40:1 Amsoil Interceptor and your good.

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