Turbo Boost

Discussion in 'Trucks [ Eighteen Wheelers ]' started by greghindy, Aug 10, 2012.

  1. greghindy

    greghindy Bobtail Member

    Can anyone tell me what the maximum turbo boost should be on a Cummins ISX (EGR deleted) ?
     
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  3. morehp

    morehp Medium Load Member

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    Sounds like your having the same issues everyone else has with keeping vgt
     
  4. greghindy

    greghindy Bobtail Member

    Can you tell me what boost range I should have ?
     
  5. morehp

    morehp Medium Load Member

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    I think everyone that has done it has experienced anything from 10 to 15 psi increase from standard, also I think standard was 40 psi max, Unfortunatley that with just the egr delete the vgt turbo's life is going to be way shorter than they are with out over speeding them. Then you gotta keep bolting on expensive turbos or send ECM back for vgt delete and bolt non waste gated turbo and that also = downtime. Have you seen any fuel gain with just egr deleted?
     
  6. greghindy

    greghindy Bobtail Member

    Only put it on today and went for a 40 km drive, noticed water temp cooler, engine oil temp cooler just Turbo Boost went up from 240kPa to 320kPa.
     
  7. morehp

    morehp Medium Load Member

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    Were you loaded for test drive?
     
  8. greghindy

    greghindy Bobtail Member

    Yep, 39000 kgs, with a single trailer, thing is, I always tow a B-Double at 61000 kgs, just put the single on because it was loaded and to see how it went with some weight on it.
     
  9. morehp

    morehp Medium Load Member

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    Was there many steep hills on your test drive ? I'd say your going to see more boost than 46 psi when you hook the big gear on the back
     
  10. morehp

    morehp Medium Load Member

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    Oh what hp did you get with the tune?
     
  11. greghindy

    greghindy Bobtail Member

    It was already set at 600 HP / 2050 Torque.
     
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