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Thread: Cold Start Enrichment in pre-2003 COS

  1. #11
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    Would you mind to provide your tune so I can compare it to min to see if there are any obvious differences?
    Might also be interesting to the EFILive folks.

  2. #12
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    Hey Alex, did you ever get resolution? I'm still having my issues with cos5 doing this, even after completely uninstalling efilive, updating firmware, and reloading the os, then the cal.
    Thanks,
    Brandon

  3. #13
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    Hi Brandon,
    Unfortunately no resolution of the problem here. I am pretty disappointed by the lack of support by EFILive, but what can you do other than asking politely several times?
    I got through the winter by adjusting the after-start enrichment, but this is obviously just a band-aid solution for the real problem.
    Alex

  4. #14
    EFILive Developer Site Admin Blacky's Avatar
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    Hi Alex,

    Firstly my apologies, I dropped the ball on this one. I could not see anything wrong with the configuration of the A008 cal when I looked at it late last year. I meant to get Ross to take a look, but did not. I've sent a message for Ross to take a look at it now.

    Regards
    Paul
    Before asking for help, please read this.

  5. #15
    Lifetime Member GMPX's Avatar
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    Can you confirm that changing the values in B3647 results in AFR changes?
    I looked at the COS code again and B3647 is multiplied by A0008 directly after the AFR / EQ value from B3647 is calculated.

    If A0008 is not working at all then I can only assume that the PCM is not using B3647 which would mean it is not in Open Loop.

    Cheers,
    Ross

    P.S - I'll keep an eye on this thread until it's solved this time
    I no longer monitor the forum, please either post your question or create a support ticket.

  6. #16
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    Ross,
    thanks for stepping in again.
    Yes, changes to B3647 results in different AFRs. Through AutoVE I have enough evidence that it worked.
    Since I use Semi-OL, maybe this has something to do with it.I don't know what the similarities between my case and the others are but the configuration must be somehow inhibiting the function of A0008.
    Alex

  7. #17
    Lifetime Member GMPX's Avatar
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    Well this makes no sense then, the A0008 table is referenced directly after the B3647 table value has been read, it's not like it can be skipped.
    If possible can you put a crazy number in A0008? Maybe the scaling is off in the software display so instead of multiplying by 1.0 it's really 0.1, though I doubt it because it works for some people (including on my car if I recall, it was 4 years ago!).
    If you were to set A0008 to the max value allowed you should see 'some' change to the commanded AFR/EQ.

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

  8. #18
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    I would be happy to test waht you suggest, but right now I don't have the WBO2 installed. I could put it in the tailpipe though and check.
    I'll have to wait until the weekend though - not enough time to play in between.
    @ Brandon, maybe you can make this small experiment.
    Alex

  9. #19
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    I'll see what I can do today!
    -Brandon

  10. #20
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    Here is an older cold start log with AFRs and my tune that I was running back then. You can clearly see the discrepancy between commanded and actual AFR.
    Attached Files Attached Files

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