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LS1 Edit gurus Cant get truck to hold timing

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Old 06-05-2007, 05:37 PM
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Default LS1 Edit gurus Cant get truck to hold timing

Can't get the truck to hold timing no matter what we do. holds it great in first gear and then it goes to 0 when it goes into second gear etc... 408 with a D-1 procharger, 4l80 with TCI stand alone. I just thought I'd try some of you geniues and see what you come up with. no one else can so far. Disabled the knock sensors to eliminate that. Any info you can throw my way would be appreciated.
Old 06-05-2007, 07:40 PM
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should be able to datalog all of the spark parameters to see what is pulling timing out whether it be IAT, ECT, TM or whatever.
Old 06-05-2007, 11:04 PM
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I'll check to see if that was done I think it was. I know that we already did a crank relearn and that didn't fix it. I will check on that for sure. Thanks for the imput.
Old 06-06-2007, 06:45 AM
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Sounds like TM if it happens on both the 1-2 and 2-3 gear changes...
Old 06-06-2007, 07:14 PM
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Disabled. But I thought the same thing.
THanks for the help.
Old 06-07-2007, 11:36 AM
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Trucks come with aggresssive burst knock retard
and boosted is only going to see it worse.

Newer trucks with electric throttle have a lot of
crappy traction control stuff going on with both
throttle and spark.




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