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c15 at 525 setting is still weak to me. help please

Discussion in 'Trucks [ Eighteen Wheelers ]' started by walton379, Nov 22, 2008.

Page 4 of 11
  1. Nov 26, 2008 #31
    Robnozz

    Robnozz Bobtail Member

    38
    0
    Oct 15, 2008
    Milwaukee,WI
    0
    For what it's worth, there is a BXS ecm on e-bay right now with a starting bid of $249.00 and a buy it now of $549.00. It says its a 70 pin ecm, so it should work.
     
    Robnozz, Nov 26, 2008
    Robnozz, Nov 26, 2008
    #31
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  3. Nov 26, 2008 #32
    CaterpillarWrench

    CaterpillarWrench Light Load Member

    188
    49
    Nov 11, 2008
    Wrenching feverishly
    0
    BXS ecm will not work on a 6NZ. :biggrin_25512: Thanks anyway.
     
    CaterpillarWrench, Nov 26, 2008
    CaterpillarWrench, Nov 26, 2008
    #32
  4. Nov 26, 2008 #33
    DDS

    DDS Medium Load Member

    519
    177
    May 20, 2008
    Toronto
    0
    ya, I tried to back flash a bxs to a 6nz, comes up with flash error.
     
    DDS, Nov 26, 2008
    DDS, Nov 26, 2008
    #33
  5. Nov 26, 2008 #34
    YukonTrucker

    YukonTrucker Light Load Member

    203
    51
    Dec 9, 2007
    Whitehorse Yukon
    0
    So if one is looking for an ecm to flash what serial code ecms will work?
     
    YukonTrucker, Nov 26, 2008
    YukonTrucker, Nov 26, 2008
    #34
  7. Nov 26, 2008 #35
    CaterpillarWrench

    CaterpillarWrench Light Load Member

    188
    49
    Nov 11, 2008
    Wrenching feverishly
    0
    Mbn,6nz,7cz,2ws
     
    CaterpillarWrench, Nov 26, 2008
    CaterpillarWrench, Nov 26, 2008
    #35
    YukonTrucker Thanks this.
  8. Nov 26, 2008 #36
    550hpW900L

    550hpW900L Road Train Member

    1,874
    1,090
    Jan 29, 2008
    norcal
    0
    1MM will work too thats of a 600hp 3406E, when they went to the 70pin in 1999 but those are pretty rare.
     
    550hpW900L, Nov 26, 2008
    550hpW900L, Nov 26, 2008
    #36
    CaterpillarWrench Thanks this.
  9. Nov 26, 2008 #37
    walton379

    walton379 Light Load Member

    63
    2
    Nov 21, 2008
    Moon Lake, MS
    0
    just tossed the mufflers in the scrap pile. put 6 inch straights on. Now thats what a cat is supposed to sound like! got a nice low tone at around 1500rpm. Have not had a chance to load it yet but I can tell its better. throttle responce better. However I can really feel it cut out in the last two gears. As soon as boost comes up it falls on its facelike a wimp.
     
    walton379, Nov 26, 2008
    walton379, Nov 26, 2008
    #37
  10. Nov 26, 2008 #38
    550hpW900L

    550hpW900L Road Train Member

    1,874
    1,090
    Jan 29, 2008
    norcal
    0
    Its probably de-rating, how much boost are you seeing?
     
    550hpW900L, Nov 26, 2008
    550hpW900L, Nov 26, 2008
    #38
  11. Nov 26, 2008 #39
    walton379

    walton379 Light Load Member

    63
    2
    Nov 21, 2008
    Moon Lake, MS
    0
    31.5 or so empty an 35 or so on a real long hard pull.
     
    walton379, Nov 26, 2008
    walton379, Nov 26, 2008
    #39
  12. Nov 26, 2008 #40
    550hpW900L

    550hpW900L Road Train Member

    1,874
    1,090
    Jan 29, 2008
    norcal
    0
    Yeah it de-rating, does the boost fluctuate up and down between 25-30psi? Check your wastegate line for cracking and make sure the valve thats behind the fuel filter base on the drivers side is plugged in to the harness. As soon as that ecm sees 33psi it will de-rate.

    If you tried blocking the wastegate then leave it open.
     
    550hpW900L, Nov 26, 2008
    550hpW900L, Nov 26, 2008
    #40
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