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02 8.1 Allison tuning

6.2 turbo

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I'm tuning this Allison with hptuners,and hate the delay it has for downshifts. I dont know if its hydraulics or electrical. I deleted all tm, and increased line psi via force motor. Upshifts are better,just lags about 10 sec for a kickdown/ passing gear.
 

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FRANKENBURBAN
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I'm tuning this Allison with hptuners,and hate the delay it has for downshifts. I dont know if its hydraulics or electrical. I deleted all tm, and increased line psi via force motor. Upshifts are better,just lags about 10 sec for a kickdown/ passing gear.
If it's dropping more than 1 gear, it will take some time. By design, the allison must go through each gear, do it's checks, setup for the next gear, and so on for each shift.
 

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Yea I feal it momentarily shift down one gear ,then another gear. Not sure if many people know this,but for some reason the 02 8.1 tcm has all the regular pressure tables like a 4l80 or 4l60. All the same year Dmax just have the off going and on going. Mine has both. The Allison tuning is new to me,but the 8.1 sure woke up with 35 deg ign timing. And it had a 60 sec delay for pe.
 

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There is no adjustable line pressure in the allison until 2011. There is ALOT if tables in there that should not be there, and even more that are mislabled. Be dam certain of what you are changing before touching it. I only make small changes to a handful of tables in them. Learned the expensive way to leave the allison tuning alone
 

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Mine has the force motor table,can't say for sure if I increased the psi or not. It has medium firm shifts ,with no tm.
 

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The table might be there, but it doesn't do anything as there is no force motor in a 99-10 allison 1000. And turning off torque management is a quick way to hurt your trans. If you want the trans to shift faster, build it to do so. Electronically modifying an Allison to shift faster/firmer is how you break hard parts. It's a HD truck trans.
 
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