Dead stop WOT timing pull, not TM???
06-09-2006, 04:59 AM
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Dead stop WOT timing pull, not TM???
I am having this problem on both of my brother's trucks, one an 02 Denali and the other an 04 Z71 Tahoe. I have all the torque management removed(I think) and from a dead stop and nail it and it will pull timing down around 0 initially. It doesn't pull any at shift. Is there something i'm missing with Tq mngmt or how can I tune this out? Using HPT.
06-09-2006, 08:41 AM
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make sure you have removed both engine and transmission torque managment, and go ahead and disable transmission abuse mode (if it makes you uncomfortable, just do it for the testing purposes and put it back)
06-09-2006, 08:46 AM
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Originally Posted by Nickvrebel
make sure you have removed both engine and transmission torque managment, and go ahead and disable transmission abuse mode (if it makes you uncomfortable, just do it for the testing purposes and put it back)
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06-09-2006, 11:29 AM
#8
I've read a few posts by Mr Bubb (w4m) saying there is a launch spark modifier table in the PCM that none of the three tuning packages have as an option to edit. If that is true, it would most likely be your culprit.
That or burst knock like kbracing said. Check your delta air mass tables.
That or burst knock like kbracing said. Check your delta air mass tables.
06-09-2006, 12:45 PM
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Originally Posted by dc_justin
I've read a few posts by Mr Bubb (w4m) saying there is a launch spark modifier table in the PCM that none of the three tuning packages have as an option to edit. If that is true, it would most likely be your culprit.
That or burst knock like kbracing said. Check your delta air mass tables.
That or burst knock like kbracing said. Check your delta air mass tables.
If thats so, I would like to know what kind of tuner he's using to see this? AFAIK, he is using EFI Live to tune.
Also, if there is this table why doesn't everyone get timing pulled at WOT?
06-09-2006, 12:50 PM
#10
Originally Posted by Zick
If thats so, I would like to know what kind of tuner he's using to see this? AFAIK, he is using EFI Live to tune.
Also, if there is this table why doesn't everyone get timing pulled at WOT?
Also, if there is this table why doesn't everyone get timing pulled at WOT?
Personally, I'd put money on it being a delta air mass issue, or timing being pulled due to MAF and MAP readings being too far apart with such an influx in air...
I just posted what Jesse has claimed to exist to further discussion on the topic.
