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Paccar mx13 boost

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by insanityeight, May 22, 2018.

Page 1 of 2
  1. May 22, 2018 #1
    insanityeight

    insanityeight Light Load Member

    291
    113
    Jul 26, 2013
    birmingham al
    0
    How high can the boost pressure safely be programmed to for better performance and also is it possible or feasible to do away with vgt turbo or will it kill the engine brake? Thanks in advance.
     
    insanityeight, May 22, 2018
    insanityeight, May 22, 2018
    #1
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  3. May 22, 2018 #2
    spsauerland

    spsauerland Road Train Member

    4,296
    10,891
    May 31, 2010
    West Harrison, In
    0
    Boost is not what is killing performance on MX...
     
    spsauerland, May 22, 2018
    spsauerland, May 22, 2018
    #2
    Oxbow and Goodysnap Thank this.
  4. May 22, 2018 #3
    insanityeight

    insanityeight Light Load Member

    291
    113
    Jul 26, 2013
    birmingham al
    0
    Not saying that. Just curious if more boost will help and how high can it safely go?
     
    insanityeight, May 22, 2018
    insanityeight, May 22, 2018
    #3
  5. Jun 4, 2018 #4
    Oldironfan

    Oldironfan Road Train Member

    5,776
    5,544
    May 22, 2017
    0
    Help with what? I'm driving a 2015 mx13 400,000 miles on it. 13 speed manual, 3.25 axles and I just ran all day from postage Indiana to Potsville, PA doing speed limit all day with 43,000 in the reefer. And my dash at the end of the day showed 7.6 mpg. It's pretty accurate. I even ran 67 mph in 8 direct with the cruise on. I am not sure what power rating this engine is. But I'm sorry theses engines have plenty of power to do the job. And fuel economy is impressive. My last tank mpg avg was 8.10 flat land driving.
     
    Oldironfan, Jun 4, 2018
    Oldironfan, Jun 4, 2018
    #4
  7. Jun 5, 2018 #5
    insanityeight

    insanityeight Light Load Member

    291
    113
    Jul 26, 2013
    birmingham al
    0
    I have that exact same drive train and trans with a delete and 530 hp tune. Mine outright sucks on a pretty decent hill and my fuel mileage is more around 6 to 6.2 if im easy with it. Its a 2014 but i found that it seems to have a 2012 engine in it so dont know if thats the problem or what.
     
    insanityeight, Jun 5, 2018
    insanityeight, Jun 5, 2018
    #5
    Oldironfan Thanks this.
  8. Jun 5, 2018 #6
    Oldironfan

    Oldironfan Road Train Member

    5,776
    5,544
    May 22, 2017
    0
    I avg 7 to 8 mpg. Doing 65 mph usually. Avg is tank avg. All stock emissions with 400,000 miles. I think the difference is I have a tk apu no idle.
     
    Oldironfan, Jun 5, 2018
    Oldironfan, Jun 5, 2018
    #6
  9. Jun 5, 2018 #7
    insanityeight

    insanityeight Light Load Member

    291
    113
    Jul 26, 2013
    birmingham al
    0
    Im home daily but also have apu but ive tried 65 and not much improvement over 70 if i dont stay in it
     
    insanityeight, Jun 5, 2018
    insanityeight, Jun 5, 2018
    #7
  10. Aug 28, 2018 #8
    steve092

    steve092 Light Load Member

    298
    79
    Dec 7, 2015
    0
    Yours is a EPA10 1st Gen mx13.... me and you are F**ked

    Yours is a 2nd gen hence better everything
     
    steve092, Aug 28, 2018
    steve092, Aug 28, 2018
    #8
  11. Feb 22, 2020 #9
    Lightning McQueen

    Lightning McQueen Bobtail Member

    14
    0
    Feb 22, 2020
    0
    Ok I have a 2012 t660 with an epa 10 mx13 I probably need an overhead done but I'm lucky to get 6.anything I just got rid of some stuff after the turbo if you follow me and it went up a bit but still not seeing 7s hopefully the overhead will do the trick
     
    Lightning McQueen, Feb 22, 2020
    Lightning McQueen, Feb 22, 2020
    #9
  12. Feb 22, 2020 #10
    Lightning McQueen

    Lightning McQueen Bobtail Member

    14
    0
    Feb 22, 2020
    0
    If that don't fix the issue I'll have to spend some money and buy a laptop so I can tune it myself I'll get the files from my guy for pretty cheap and loose the vgt if I have to but I think you should be able to remap the vgt accuator to work a little better
     
    Lightning McQueen, Feb 22, 2020
    Lightning McQueen, Feb 22, 2020
    #10
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