2015 cummins 550 2050 torque

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Shives, Feb 14, 2015.

  1. Shives

    Shives Bobtail Member

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    Jan 1, 2009
    Devlin, Ontario
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    i got a 2015 cummins with 2050 torque and it wont pull as good as a 500 paccar had a buddy with a old 92 volvo 430 detriot stay right with me on a long hill i had 67000 kgs on he had 69000 kgs on what can you do to these new cummins to wake them up
     
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  3. Thed302

    Thed302 Light Load Member

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    Oct 30, 2014
    USA
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    Watch out for them 500 horse Paccars, they're under-estimated by just about every one. There isn't much you can do with factory parts to the 550 horse ISX's without going illegal.
     
    Lucar Thanks this.
  4. russtrucker

    russtrucker Road Train Member

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    Central PA
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    I would try to put ported manifold, fass, and bully dog gt.
     
  5. Sportster2000

    Sportster2000 Road Train Member

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    Jan 5, 2008
    Indiana
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    What RPM range are you at when the other trucks are catching up to you? If you keep it on the lower end of the rpm's then you will have the full amount of torque. If you run up higher around 1800 rpm you will get the full horsepower of the engine. There really isn't much that you can do to them that won't interfere with the emissions on them.
     
  6. poppapump1332

    poppapump1332 Road Train Member

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    birdsboro,pa
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    Idk my old 2010 isx 550 would outpull any new motor but it took awhile to break it in and also cummins is a higher rpm motor its sweet spot doesnt come in until 1600 and reaches its peak torque at 1800 . Get some miles on it and it will come to life.im driving a 2014 isx 600hp now with only 35,000miles on her and doesnt pull as good as my old 2010 but once broken in it will come to life.
     
  7. russtrucker

    russtrucker Road Train Member

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    Mar 27, 2012
    Central PA
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    my friend from hirschbach drives a 2015 prostar with cummins isx15 450 hp engine. So far 150k miles since from factory without breakdown or engine issues.
     
  8. IH Branded

    IH Branded Medium Load Member

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    Jun 4, 2013
    Great Lakes area
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    The first two you listed are a complete waste of money, however the third is worth every penny. Speaking only from experience
     
  9. russtrucker

    russtrucker Road Train Member

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    Mar 27, 2012
    Central PA
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    I heard many truckers that have hdgt done better benefits with power and fuel mileage. FASS maybe, 100% pure fuel flow, but questions me about the fuel pressure.
     
  10. Lucar

    Lucar Road Train Member

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    Aug 22, 2012
    Texas
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    What's the rear ratio? What is the rear ratio paired to the paccar and volvo?
     
  11. Lucar

    Lucar Road Train Member

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    Aug 22, 2012
    Texas
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    Do you know or heard of the "steinbauer box" ?
     
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