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Thread: COS3 cold lean startup solution

  1. #11
    EFILive Crew Site Admin Tordne's Avatar
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    Did you try the values I posted?
    Andrew
    EFILive Crew


  2. #12
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    Quote Originally Posted by Tordne
    Did you try the values I posted?
    Mine were very similar from the factory (with the addition of multiple columns for E80 fuel). Any value other than 1.0 and it has not effect unfortunately. :(

    Stock, mine were:

    0.977783
    0.977783
    0.977783
    0.977783
    0.977783
    0.972900
    0.944092
    0.929932
    0.919922
    0.909912
    0.899902
    0.889404
    0.879883
    0.864990
    0.864990
    0.864990
    0.864990
    0.864990
    0.864990

    Now, I have:

    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    1.000000
    0.879883
    0.864990
    0.864990
    0.864990
    0.864990
    0.864990
    0.864990

  3. #13
    EFILive Crew Site Admin Tordne's Avatar
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    Gotcha. So I guess we need to let Ross have a look at it as it is obviously not exclusively related to the B3650 table.
    Andrew
    EFILive Crew


  4. #14
    Lifetime Member Whippled 496's Avatar
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    Ditto what Justin said. Those values did not work for me Tordne. Seems it has to be populated with 1's up to the point you want to start enrichment decay.

    Sorry to be a pest and not to get side tracked from the original issue, but I have another problem. I noticed that adjusting {B3650} and/or an error in the way {A0008} works in conjunction with {B3647/49}, i get wierd commanded AFRs. The file i posted in this thread shows my commanded AFR in {B3647/49} being 14.7018, but the commanded AFR that shows up in the scan tool is 14.79. When i made further adjustments to {A0008} and {B3650} to try and dial in my enrichment decay, I ended up with a commanded AFR of 14.32. And the odd thing is, I made no adjustments to {B3647/49}. This is very aggrivating because i didnt notice it until about the 3rd itteration of AutoVE tuning my VE table. I just happened to look at my commanded AFR in the scan tool and it was 14.32..

    I may back out of the COS3 and go back to the 1bar until some of these issues are fixed, it has me worried about what other small variables might be out of whack that might cause problems.
    2014 GMC 2500HD RCLB SLE
    LML / Allison

  5. #15
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    Subscribing
    2017 Camaro SS, 2014 Ram 2500 4x4 Cummins 6.7L, 2004 Chevy Avalanche Z71 4̶X̶4̶(now 2WD), 5870lb race weight, 10.93@ 124, Twin TVS1900s, Twin Throttle, 429 LSX, 4L80E, custom 14 bolt rear, V2, R̶o̶a̶d̶R̶u̶n̶n̶e̶r̶(dead), COS3......
    Gettin' the Groceries

  6. #16
    Lifetime Member Whippled 496's Avatar
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    Quote Originally Posted by DrX
    Subscribing

    Me too....LOL
    2014 GMC 2500HD RCLB SLE
    LML / Allison

  7. #17
    Lifetime Member GMPX's Avatar
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    FYI, I've Emailed Whippled 496 a new tun file to try.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  8. #18
    Lifetime Member Whippled 496's Avatar
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    Thanks Ross, I responded to your Email. I will give this a shot tonight and let you know the results. Thanks for the quick response.

    Jimmie
    2014 GMC 2500HD RCLB SLE
    LML / Allison

  9. #19
    Lifetime Member TAQuickness's Avatar
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    Very interesting find Whippled. I've been following this thread pretty close. I'm running COS5 for the Fbod's and do not have this problem. But, I did find B3650 to have interesing effects on cold start behavior.


  10. #20
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    Looks like I'm not receiving my notifications today. Guess I'll have to keep checking in. Hope the new .tun works out.
    2017 Camaro SS, 2014 Ram 2500 4x4 Cummins 6.7L, 2004 Chevy Avalanche Z71 4̶X̶4̶(now 2WD), 5870lb race weight, 10.93@ 124, Twin TVS1900s, Twin Throttle, 429 LSX, 4L80E, custom 14 bolt rear, V2, R̶o̶a̶d̶R̶u̶n̶n̶e̶r̶(dead), COS3......
    Gettin' the Groceries

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