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Thread: COS 3 not responding to VE map changes

  1. #21
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    I'm not getting "sane" numbers on my BEN correction maps. 5,000 rpm and 100kpa might read .011 or something close and the lower the rpm/kpa the closer the values are to my actual ve table. This started as soon as I went to speed density.

  2. #22
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    Maybe I should just give up on these SD80s and get some ID1000s...

  3. #23
    Lifetime Member 5.7ute's Avatar
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    Post a screenshot of what you are seeing.
    The Tremor at AIR

  4. #24
    Joe (Moderator) joecar's Avatar
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    +1 screenshots... and tune/log files.

  5. #25
    Lifetime Member Chevy366's Avatar
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    You may have to play around with A0014 and A0008 to achieve the desired results, seems I had the same problem with a stock setup and that is how I resolved it.
    2005 1500 HD , Custom OS3 SD tune .
    2006 Trailblazer
    Dinosaurs and Plants gave their lives so that we may drive , long live fossil fuel .

  6. #26
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    Here is a screenshot of the insane values that I'm getting and check out the ve table that's actually working for my car. To me the ve table looks terrible but this is what gets the car to run well. I'm still unsure of the injector characterization values I'm using but it's like pulling teeth finding proper values. Once again thanks to everyone for helping me with this. I know you are all busy people and you by no means owe me anything.



    Attachment 16987LR4 COS3 SD_0006.ctz

  7. #27
    Joe (Moderator) joecar's Avatar
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    Screenshot attachment link is broken...

  8. #28
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    Click image for larger version. 

Name:	insane values.JPG 
Views:	360 
Size:	215.9 KB 
ID:	16989

  9. #29
    Lifetime Member darcy's Avatar
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    VE does look pretty ordinary, but it'll never run nice with B3647 the way it is - apart from 2 cells, it hasn't been fixed up since you converted to a COS.
    You've mentioned the AFRs you're getting, but you need to look at what it is you are commanding.

    BEN numbers certainly look wrong, but it's difficult to offer any further analysis or insight without a log. Can you past the log that made that map?

  10. #30
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    Is your IAT sensor integrated into your MAF sensor?

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