New 4L60E went soft

[JThomas]

I just overhauled the 4l60e in my truck, and for the first couple drives the vcm scanner was showing a constant 92psi for 'Line pressure desired', no matter what throttle/load/rpm. The trans was shifting really quick and firm. Just recently as i was trying to collect some data before making adjustments, i noticed that the shifts softened up SIGNIFICANTLY. its not slipping (at least i think). i haven't made a WOT pull because i was nervous there was an issue, and i didn't want to damage something with less than 100 miles on it.
Anyways, now the shift pressure will vary with load/throttle/rpm. the scanner was showing 0psi at idle and would climb around depending on how i was driving it. the highest i saw was ~70psi. (but i wasnt driving very aggresivly)
i do understand they learn adaptive shifts and adjust pressure accordingly

so here are my questions:
stupid question first- why are the pressure tables showing 92psi line pressure, when i thought i should be around 200something for line pressure? what pressure is this reading/how/where is it measuring it from?

i have the shift time set to 0, and the shift adapt x,y,z set to disabled, why didn't my pressure go back to the unlearned 92psi?

is there a way to unlearn shift adapt in HP tuners?


in attempt to unlearn the shift adapt, i disconnected my battery ground for about 15mins, and nothing changed. still soft.

as far as the mechanical modifications go:
shift kit- trans scat TCI (#376002)
vette servo
sonnax .490 boost valve
TCI 3000stall converter


im trying to figure out if i have a mechanical issue, or if its simply a computer/cal issue. any help is greatly appreciated

[JThomas]

Okay, so I used a friends scanner and reset all of the adaptive pressures. The trans is still just as soft?!

Then, I made a WOT pull from a stop. The shifts felt good, zero recorded slips, no shift flare, and I spun 3 tires on the launch. Any ideas? I have the battery disconnected again, I was told it should take up to an hour. So I'm going to give it a try.

[5FDP]

The magical log file and actual tune file could be handy here.

[JThomas]

The magical log file and actual tune file could be handy here.

let me go put the battery back in, then save a log if its still soft and ill upload it.

[JThomas]

'07 TBSS - Tune 1.hpt

here is the most up to date tune i had loaded in

[JThomas]

here is the log and tune from when everything was good.

first pull tune.hpt
first pull.hpl

[JThomas]

Trans still soft...

What other channels should I log? Time to put a mechanical gauge on it?