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12.7 455hp Detroit tune help

Discussion in 'Ask An Owner Operator' started by Trukie, Aug 23, 2021.

  1. Aug 23, 2021 #1
    Trukie

    Trukie Bobtail Member

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    Dec 4, 2020
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    I have a 05' 12.7l (455hp/1550tq factory) Detroit with the egr painted bright pink, i rebuilt the engine 30k ago and have a 171702 turbo on it,
    I have it set to 455/1650
    I want to know how much i can turn it up to where i have good power and reliability as well. I want it to last
    Hp/tq you recommend?

    Please dont tell me to set it at 700hp

    Please comment, this website seems dead these days
     
    Trukie, Aug 23, 2021
    Trukie, Aug 23, 2021
    #1
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  3. Aug 23, 2021 #2
    Bean Jr.

    Bean Jr. Road Train Member

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    In a Facebook group I belong to, it seems to be the consensus on DDEC4 is 600.
     
    Bean Jr., Aug 23, 2021
    Bean Jr., Aug 23, 2021
    #2
    feldsforever and baha Thank this.
  4. Aug 23, 2021 #3
    Rideandrepair

    Rideandrepair Road Train Member

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    Aug 8, 2015
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    Might be able to set it to 500 1650. That was the norm, before the 14L became the new 500. Don't really know myself, as far as just changing parameters on ecm. I’d think whether it’s a Ddec 4 or 5 should be able to, without changing any hard parts.
     
    Rideandrepair, Aug 23, 2021
    Rideandrepair, Aug 23, 2021
    #3
  5. Aug 23, 2021 #4
    blairandgretchen

    blairandgretchen Road Train Member

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    Dec 9, 2011
    South west Missouri
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    DDEC3, ‘95 - same turbo, I had Fernando set mine at 500/2050 I think.

    Runs fine.

    Mine is the lower grade motor without squirty nozzles.
     
    blairandgretchen, Aug 23, 2021
    blairandgretchen, Aug 23, 2021
    #4
    Bean Jr. Thanks this.
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