Thinking about turning horse power up on ISX 15

Discussion in 'Kenworth Forum' started by Auctioneer, Mar 27, 2018.

  1. Auctioneer

    Auctioneer Light Load Member

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    May 7, 2010
    Trenton, NC
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    I have a 2015 KW T680 with a ISX 15 Cummins engine and an "Eaton Fuller UltraShift Plus" auto shift tranny.
    I am considering turning the HP from 450 to 500 HP.
    Any words of caution or advice is greatly appreciated.
    Thanks,
    Auctioneer
     
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  3. Hayfieldmn

    Hayfieldmn Light Load Member

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    Sep 10, 2016
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    How do you like the ultrashift plus?
     
  4. Auctioneer

    Auctioneer Light Load Member

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    38
    May 7, 2010
    Trenton, NC
    0
    I like the auto shift very well, have had no problems with it. It's really great in stop and go traffic.
     
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