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Thread: Post injection for quicker spool up

  1. #1
    Tuner in Training Noah's Avatar
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    Post injection for quicker spool up

    I am always fighting spool up here high up in the rockies. I get a lot of smoke and lag down low, not at all up high.Can anyone school me on how to use the 3rd event to help with this? I am looking for some sort of starting point.

    Thanks!!
    2004.5 Cummins. BW300sxe turbo, BD T4 manifold, BD CAI, 5" turbo back exhaust, turbosmart ext wastegate, BD lift pump with 2 mic filter and h2o separator, banks intercooler, Banks intake horn, slightly built tranny.......

  2. #2
    Tuner in Training MAIDENCR's Avatar
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    Post your tune and setup info

  3. #3
    In the regions of slow spool add back stock timing and quantity and play with it from there

  4. #4
    Tuner in Training Noah's Avatar
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    Quote Originally Posted by Jim P View Post
    In the regions of slow spool add back stock timing and quantity and play with it from there
    I did that. Helped a tiny bit. I put to 15 deg now. Will see how it goes when roads thaw out again. Ill post up my tune when i get to the laptop. Thanks!
    2004.5 Cummins. BW300sxe turbo, BD T4 manifold, BD CAI, 5" turbo back exhaust, turbosmart ext wastegate, BD lift pump with 2 mic filter and h2o separator, banks intercooler, Banks intake horn, slightly built tranny.......

  5. #5
    Tuner in Training Noah's Avatar
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    Quote Originally Posted by MAIDENCR View Post
    Post your tune and setup info
    My recent tune. I had the post set around 11 and it worked ok but still smoke. I moved it to 15 and will try when we thaw out and after I reinstall my transfer case.
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    2004.5 Cummins. BW300sxe turbo, BD T4 manifold, BD CAI, 5" turbo back exhaust, turbosmart ext wastegate, BD lift pump with 2 mic filter and h2o separator, banks intercooler, Banks intake horn, slightly built tranny.......

  6. #6
    Tuner in Training MAIDENCR's Avatar
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    Untitled.jpg

    timing should look more like that
    03 cummins,100hp nozzle,dual cp3,s468/87 or sxe472

  7. #7
    Tuner in Training Noah's Avatar
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    Quote Originally Posted by MAIDENCR View Post
    Untitled.jpg

    timing should look more like that
    Can you send a pic of the table as well?
    2004.5 Cummins. BW300sxe turbo, BD T4 manifold, BD CAI, 5" turbo back exhaust, turbosmart ext wastegate, BD lift pump with 2 mic filter and h2o separator, banks intercooler, Banks intake horn, slightly built tranny.......

  8. #8
    Tuner in Training MAIDENCR's Avatar
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    Untitled1.jpg

    but every trucj is different.....I have bigger injector...bigger turbo...run a lot off rpms...
    03 cummins,100hp nozzle,dual cp3,s468/87 or sxe472

  9. #9
    Quote Originally Posted by MAIDENCR View Post
    Untitled.jpg

    timing should look more like that
    The 03 is different from the 04.5, and just way too many variables involved to say ones timing table needs to look like someone else?s timing table

  10. #10
    Tuner in Training MAIDENCR's Avatar
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    Ya...like i said...will also need to continue fine tune after winter

  11. #11
    Tuner in Training Noah's Avatar
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    Just curious, why should my timing look like that? Are you basing that on my other settings? Seeing how your truck has a different setup and is an 03, wouldn't that tune be way off for me? Just curious and still learning.

    Thanks.
    2004.5 Cummins. BW300sxe turbo, BD T4 manifold, BD CAI, 5" turbo back exhaust, turbosmart ext wastegate, BD lift pump with 2 mic filter and h2o separator, banks intercooler, Banks intake horn, slightly built tranny.......

  12. #12
    Quote Originally Posted by MAIDENCR View Post
    Untitled1.jpg

    but every trucj is different.....I have bigger injector...bigger turbo...run a lot off rpms...
    I'm going to disagree with you. Especially with big injectors there is no reason to have that much timing at low RPM. You are sacrificing spool up and probably have more smoke than needed with that table. The top end looks pretty good. Nice and smooth but nice and smooth on a graph doesn't always mean anything.
    06 SCLB. ATS stage 6, ATS Twin cp3, s369sxe, Fass 220, Hamilton 188/220, 110# springs, DDP 220's, ARP 425's, Big valve head, .40 over, 12v rods, balanced rotating assembly, Efi-Live etc.. 770hp 1380tq Tenacity Tuning

  13. #13
    Tuner in Training MAIDENCR's Avatar
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    Where you think i have to much timing?

  14. #14
    829 to 1444rpm
    06 SCLB. ATS stage 6, ATS Twin cp3, s369sxe, Fass 220, Hamilton 188/220, 110# springs, DDP 220's, ARP 425's, Big valve head, .40 over, 12v rods, balanced rotating assembly, Efi-Live etc.. 770hp 1380tq Tenacity Tuning

  15. #15
    Tuner in Training MAIDENCR's Avatar
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    Will look at it...but it was driving really fine...maybe i would gain some spool up time