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X15 performance hp/tq increase

Discussion in 'Peterbilt Forum' started by Wespipes, Apr 23, 2020.

  1. Apr 23, 2020 #1
    Wespipes

    Wespipes Road Train Member

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    Jul 14, 2019
    0
    I have a 18 Cummins x15 performance. Only 89k on it. Was thinking about asking Cummins to increase the hp and tq. Its at the stock 565/1850. I was told they simple change the programing. Is there any risks with this? Blowing heads or what not? Anyone done it?
    On a Pete 389
     
    Last edited: Apr 23, 2020
    Wespipes, Apr 23, 2020
    Wespipes, Apr 23, 2020
    #1
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  3. Apr 23, 2020 #2
    CousinVinny

    CousinVinny Medium Load Member

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    Jan 26, 2015
    New Jersey
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    We have an '18 w/ 91k that has been operating flawlessly @ 605/2050.
     
    CousinVinny, Apr 23, 2020
    CousinVinny, Apr 23, 2020
    #2
    Wespipes Thanks this.
  4. Apr 23, 2020 #3
    magoo68

    magoo68 Road Train Member

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    Jun 11, 2011
    st malo mb canada
    0
    A former brother in law pulls 140,000 lbs every day he had a factory 605/2050 . He ended up turning it down to 565/1850 because his co worker kept up with him but burnt way less fuel.. He said the 605 required more rpm to stay cool on harder pulls than the 565 setting . He drives a w900 as does his co worker. With 80 k loads it might not be the case though.
     
    magoo68, Apr 23, 2020
    magoo68, Apr 23, 2020
    #3
    Wespipes Thanks this.
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