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Thread: Timing being pulled, but where?

  1. #1
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    Default Timing being pulled, but where?

    Something is pulling timing on me but I don't see where. I have WOT timing set to 22* but I am seeing it fall as low as 13* during a run. A0010 does not kick in until 175kPa which will never happen with a 3.25 pulley at these ambient temps.

    I have logged all of the spark PIDS.

    On a recent log the only activity I saw was: IAT spark -1.5* max and KR 1.5* max but both did not occur simultaneously. Only the -1.5* IAT spark was active when spark advance was at the minimum of 13-14*(ambient was 35*C and IAT climbed to 81*C under boost). So I should still have seen 22-1.5=20.5* of advance.

    Tonight ambient was 23*C. WOT timing logged at 18.5*-19* with no KR. Didn't log IAT spark though. A couple of months back, when I first bumped the timing up to 22*, that's exactly what I saw when logging.

    I've checked all the multipliers as well.

    Is there anywhere else that I can look?
    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......
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    I forgot the table name or number... but there is table in "engine protection" for kr retart timing that has values on how much timing to remove if based on the severity if kr read. You can adjust these values, but I would leave them as is. They protect your motor.

    Turn off burst knock, as that is just a computer guesss, and just stay with the regualr KR that is read by the sensors themselves. You must either be hittong a spot on the ve map or timing map that is causing detonation for 1 instant. This will retard timimg alot and it will take a while to gradually go back to normal (a few seconds).

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  3. #3
    EFILive Reseller ringram's Avatar
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    Log all the EST spark modifiers as well. That will help you see where its going. Oh and ASPARK to see if its hanging around in the lower octane table too.
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    No KR was logged and Burst KR was disabled. Also curious as to why MAP does not log over 105kPa(boost). I logged the sae.map pid.

    This is what I saw:
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    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

  5. #5
    Guess who's back!!!! Black02SS's Avatar
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    How many pids do you have selected? Have you scaled the MAP scaler for the new 2bar sensor?

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    Quote Originally Posted by Black02SS
    How many pids do you have selected? Have you scaled the MAP scaler for the new 2bar sensor?
    Only the PIDs shown above. Boost logs fine when I use my AutoVE PID set. I logged my Spark PID selection shown above and my AutoVE PID selection one right after the other tonight. Both include SAE.MAP but logged MAP doesn't go over 105 with the Spark set of PIDs. Went up to 170 with my AutoVE PID set. It's like I only have a 1 bar sensor when I log the spark PIDs.
    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

  7. #7
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    How many channels are selected with those pids?

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    Quote Originally Posted by Black02SS
    How many channels are selected with those pids?
    Hehe......Plenty of channels-45. But I had to log all of the spark PIDS. Not that I found the culprit. I'll cut some of the inactive PIDs and see what happens to the MAP.
    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

  9. #9
    Guess who's back!!!! Black02SS's Avatar
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    First lets get it down to 24 and go from there. 45.... :lol:

  10. #10
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    OK, MAP is showing boost again with 23 channels used. Still don't see where the 3-4* of timing is going. Base is 22. Cyl1 shows 18.5. No KR and ASPARK is locked at 100%.
    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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