Tuning, Diagnostics, Electronics, and Wiring HP Tuners | EFILive | Hand Held Programmers | Stand Alone PCM's | Electronics | Wiring Diagrams

4L80E guys - what are your desired shift times set at?

Thread Tools
 
Search this Thread
 
Old May 5, 2006 | 01:55 PM
  #1  
thunder550's Avatar
Thread Starter
High on diesel fumes
iTrader: (70)
 
Joined: Mar 2005
Posts: 12,658
Likes: 3
From: Phoenix, AZ
Default 4L80E guys - what are your desired shift times set at?

Stock is .4 down low and .3 up high....what are you guys running? Any problem with setting it all to 0?
Reply
Old May 5, 2006 | 02:00 PM
  #2  
kbracing96's Avatar
TECH Senior Member
iTrader: (26)
 
Joined: Jul 2004
Posts: 9,485
Likes: 31
From: Oakland, OR
Default

It like a 60, set it to 0 and it will disable learning and use the base pressure to set shift firmness.
Reply
Old May 5, 2006 | 02:01 PM
  #3  
thunder550's Avatar
Thread Starter
High on diesel fumes
iTrader: (70)
 
Joined: Mar 2005
Posts: 12,658
Likes: 3
From: Phoenix, AZ
Default

What changes when you are running vacuum modulated instead of PCM controlled?
Reply
Old May 5, 2006 | 02:12 PM
  #4  
kbracing96's Avatar
TECH Senior Member
iTrader: (26)
 
Joined: Jul 2004
Posts: 9,485
Likes: 31
From: Oakland, OR
Default

Humm... That's a good question. I forgot you had that put on there. Since your line pressure is now controlled, buy the vac mod, I would say you would probably still set it to 0 and adjust the shift firmness with the setscrew in the vac mod. Probably wouldn't need to change anything though.

I would think that the PCM might get "confused" trying to maintain a set shift time with it not having any control over the line pressure.
Reply
Old May 5, 2006 | 02:20 PM
  #5  
thunder550's Avatar
Thread Starter
High on diesel fumes
iTrader: (70)
 
Joined: Mar 2005
Posts: 12,658
Likes: 3
From: Phoenix, AZ
Default

I think you're on the right track....got this response over at LS1Tech

https://ls1tech.com/forums/showthread.php?t=501929
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Go5.3tt06
GM Drivetrain & Suspension
120
Sep 12, 2015 09:29 AM
dantheman1540
GM Drivetrain & Suspension
11
Jul 24, 2015 01:50 AM
lxcoupe
FORCED INDUCTION
8
Jul 21, 2015 02:12 AM
lxcoupe
GM Drivetrain & Suspension
17
Jul 14, 2015 10:14 PM
zaathur151
GM Drivetrain & Suspension
5
Jul 6, 2015 10:57 PM




All times are GMT -5. The time now is 01:28 PM.