4l80e tuning

[gpr]

This is one of the sections I regularly read, and it's nice to see joecar is still at it!!!!!!

I agree 100% on that. Pretty sure if it wasn't for joecar my vehicles would not run!!!! Can't thank him enough for all the help he has given me, but even all his post on almost all topics to help everyone learn.

[joecar]

Thanks guys... lol, I have to breathe car every day in order to live

[joecar]

...
Could this indicate something else is wrong with the converter or tranny???

Not necessarily...

if you have a passenger you could command the TCC locked by doing this:
- in manual 3rd, get sufficient speed in 3rd gear,
- goto DVT tab, select LS1B controller, goto Auto Trans tab, click Activate,
- for your year's TCC, click Turn On and 100%DC (both buttons),

TCCMODE should show lock, rpm should not move much as you partway increase throttle (feels like a manual trans car)...

with throttle partway open steady, push on brake pedal, rpm should increase by a few hundred (as little as 100).

[joecar]

Sanity check:

check that each TCC release curve is at least a few mph below the respective TCC apply curve


( I looked thru those in your file, but I am known to need a sanity check )

[gpr]

Well i believe it is now locking up properly. I was playing with it and locking and unlocking it from the DVT tab. that is a very handy feature!

One thing i was logging is the "last shift time" to see how quick it was really shifting as i thought it seemed slow. If you look in the attached log towards the end there is a point where i did a wide open run. the shift times from first to second show 1.2 seconds, then 2-3 shift at 1.3 seconds. It shows it is in seconds, but that couldn't be right. still seems a bit slow. I will have to do more playing with it and maybe bump up the base pressures some more.

[Chevy366]

I agree 100% on that. Pretty sure if it wasn't for joecar my vehicles would not run!!!! Can't thank him enough for all the help he has given me, but even all his post on almost all topics to help everyone learn.

Yeah I would like to meet joecar in person, he must be like one of those bobbleheaded dolls (no disrespect intended), his head ten times larger than his body from all the knowledge he has stored there.