E7 460 Power issues

Discussion in 'Mack Forum' started by NightWind, Aug 11, 2018.

  1. NightWind

    NightWind Road Train Member

    2,446
    17,406
    Nov 11, 2006
    Sunny South, AL
    0
    this hot file is a software upgrade correct?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Mack427

    Mack427 Medium Load Member

    323
    93
    Jan 22, 2009
    0
    yes but like a say good luck getting it
     
    NightWind Thanks this.
  4. NightWind

    NightWind Road Train Member

    2,446
    17,406
    Nov 11, 2006
    Sunny South, AL
    0
    Why do you say that? My dealer should have it.
     
  5. Mack427

    Mack427 Medium Load Member

    323
    93
    Jan 22, 2009
    0
    no your dealer will not have it all hp increases goes threw allentown pa. they look at the spec of the truck then decide if they want to send the dealer the file. unless you get lucky and a dealer has a copy from a customers truck burned on a laptop. and most dealers and headquaters are not intrested in releasing the xt file its to high of a emmsions file, and turning up old trucks is becoming frowned upon. its a totally diffrent deal that showing up at cummins having them plug into the ecm and telling you what options you have
     
    HoundDog7 and NightWind Thank this.
  6. Oldironfan

    Oldironfan Road Train Member

    5,777
    5,539
    May 22, 2017
    0
    That resonator can get stuffed up as well. Than you need to punch out the disk. Or go straight pipe. Or get a high flow muffler.
     
    NightWind and jsnell Thank this.
  7. Brettj3876

    Brettj3876 Road Train Member

    11,257
    54,046
    Nov 18, 2014
    Land of local
    0
    Check out Rochester diesel

    | Rochester Diesel
    Blixxton tuning module

    We have one on a 93 (with the inline p pump) it claims 30% more and the 350 went from 26psi to 35.


    Mack Performance Injectors | Diesel Injectors | Turbos | Nozzle Honing

    Check out injectors

    And they even have a turbo.

    On tje 93 we I nframed it with 454 specs 171702 turbo 76/95 1.32 ar with stage 2 injectors and as long as you keep the egts below 1100 she'll run forever.
     
    NightWind Thanks this.
  8. Brettj3876

    Brettj3876 Road Train Member

    11,257
    54,046
    Nov 18, 2014
    Land of local
    0
    The turbo is a bw s400sx4-75 and should push 45 psi or so.

    Its the 171702 that the 60 series guys love just with mack housings. We paid 945.
     
    NightWind Thanks this.
  9. harold6091

    harold6091 Light Load Member

    120
    133
    Dec 25, 2018
    0
    hey boss i am planning to buy this turbo. how is it below 1400 rpm? is it laggy or or better compared to the regular 171702?
     
  10. Brettj3876

    Brettj3876 Road Train Member

    11,257
    54,046
    Nov 18, 2014
    Land of local
    0
    Same turbo 171702 is the S475sx. You need bigger injectors and a blixxton tuner to really make it come alive. Those 3 mods you will see 1.0-1.5 better mpg. You can't run that turbo w/o the blixxton otherwise it will be very laggy. I would do the turbo 650$ and the blixxton, then do big stage 2 or 3 injectors in that order. If you go stage 3 injectors with blixxton and that turbo you'll be sitting around 600hp at the fly.

    Boost comes on real strong at 1300 and will pull all the way til 1850. I personally don't lug it below 1400. Don't wanna stress the bottom end with all the added torque

    Look up Rochester diesel, they'll set you straight. Good bunch of guys that know their Mack's
     
  11. Brettj3876

    Brettj3876 Road Train Member

    11,257
    54,046
    Nov 18, 2014
    Land of local
    0
    Boost hits hard at 1300 and makes max boost right around 1425 all the way til 1800-1850 before the boost starts to drop off
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.