6L80 & 6.2 shifts?
May 12, 2012 | 04:01 PM
#13
TECH Fanatic
iTrader: (2)
Joined: Nov 2001
Posts: 1,124
Likes: 1
From: Michigan
I have looked at a few tunes from some "professional tuners", and it's no wonder why they dont shift worth a darn. There shouldn't be a "delay" on any of the upshifts, if it is done right. There are a few parameters that they are not even touching, that in my experience, is crucial to getting it right. Making sure the upshift pressures correctly match the desired shift times is important, otherwise, the trans has too much learning to do, which results in a changing shift feel.
I get a slight scratch on the 1-2, and the 2-3 and 3-4 are both crisp, with no delay and no slamming into gear. TM is 50% for the 1-2 and 30% for the rest. Part throttle shifts are just slightly more firm that stock, but not anything a passenger would even notice.
I get a slight scratch on the 1-2, and the 2-3 and 3-4 are both crisp, with no delay and no slamming into gear. TM is 50% for the 1-2 and 30% for the rest. Part throttle shifts are just slightly more firm that stock, but not anything a passenger would even notice.
May 12, 2012 | 04:59 PM
#14
On The Tree
Joined: Mar 2012
Posts: 111
Likes: 0
From: Lafayette, LA
Are there any recommendations I could make to my tuner using EFILive on cleaning up the shifts a little more?
Last edited by chanin6929; May 12, 2012 at 05:14 PM.
May 12, 2012 | 11:29 PM
#18
TECH Fanatic
Joined: Jul 2006
Posts: 1,737
Likes: 0
From: K.C.
go back to the stock trans file. change the shift rpm to 6100 on pattern, normal/a/b and tutd
up the full throttle shift 2-3 mph
shift torque factor
.75 as a start. adjust to your liking. remember, by changing this, you will have to adjust shift times and pressures. you'll see why if you don't.
tcc limit - disable
max torque - 650 or higher for force inducted vehicles.
stall torque mngt enable - 8000
disable - 7900
this is more than enough to get your feet wet.
up the full throttle shift 2-3 mph
shift torque factor
.75 as a start. adjust to your liking. remember, by changing this, you will have to adjust shift times and pressures. you'll see why if you don't.
tcc limit - disable
max torque - 650 or higher for force inducted vehicles.
stall torque mngt enable - 8000
disable - 7900
this is more than enough to get your feet wet.
May 12, 2012 | 11:45 PM
#19
You can do 0.3--adapts on, line pressure up, and TM is an argument that some say cut and some say don't. I believe that it should be kept (atleast to a certain extent), because of the rev-matching, but lessen the timing reduction at high rpm/load in the minimum final timing spark table.
May 13, 2012 | 12:22 AM
#20
go back to the stock trans file. change the shift rpm to 6100 on pattern, normal/a/b and tutd
up the full throttle shift 2-3 mph
shift torque factor
.75 as a start. adjust to your liking. remember, by changing this, you will have to adjust shift times and pressures. you'll see why if you don't.
tcc limit - disable
max torque - 650 or higher for force inducted vehicles.
stall torque mngt enable - 8000
disable - 7900
this is more than enough to get your feet wet.
up the full throttle shift 2-3 mph
shift torque factor
.75 as a start. adjust to your liking. remember, by changing this, you will have to adjust shift times and pressures. you'll see why if you don't.
tcc limit - disable
max torque - 650 or higher for force inducted vehicles.
stall torque mngt enable - 8000
disable - 7900
this is more than enough to get your feet wet.
