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Thread: Looking for some help on cam/headers tune LM7 5.3L (mostly spark)

  1. #41
    Joe (Moderator) joecar's Avatar
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    Post the tune file and log files from the dyno session, and post your current calc_pids.txt.

  2. #42
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    You the man! Will do. I'll keep you posted on the results when I get around to revisiting the logs. Busy completing a complete teardown/rebuild of a motorcycle in my free time at the moment. Should be done this weekend.

  3. #43
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    Untitled_0000.ctz
    Log_1.efi
    Log_0.efi
    Log_3.efi


    Above is a tune and short log files. joecar or anyone, can you tell me where the KR is coming from and how to fix it?
    Last edited by 96SWB; August 19th, 2015 at 01:04 PM.

  4. #44
    Joe (Moderator) joecar's Avatar
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    I'm looking at it...

    some of it might have been burst knock, but the throttle is increasing too slowly for this;

    some of it is real knock (some of the spikes are actually 2 saw-teeth), these coincide with HO2S21 going low (lean);

    ( your other NBO2 is flatlining, but that's beside the point, you're in OL )

  5. #45
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    hey joecar, I just changed that post to include 3 different logfiles which might have more useful PIDS

    THANK YOU for looking!

  6. #46
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    remember one NBO2 is flatlined because the WBO2 is installed there

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