Xrt pro: changing tranny schedule

[TXFF]

I have a xrt pro running pre-set setting. I want to change my tranny schedule. But my question is do I need to return my truck to stock setting before I download the schedule 2 tranny to my tunner or can I download it to the tunner without returning truck to stock first

[drunk on diesel]

no need to return to stock

[torqueshift]

just download, re-tune, and do a trans re-learn.
I run the S2L.

[04blackcrewcab]

Has anyone experienced weird shifting issues on the S1M tune? If im trying to cruise down a highway betwen 40-55 and let off the motor will go all the way down to idle. So when i get back on the pedal it has to travel all the way up to 1700 rpms or so before it engages again. I switched to S2M and its so much better.

[torqueshift]

Originally Posted by 04blackcrewcab

Has anyone experienced weird shifting issues on the S1M tune? If im trying to cruise down a highway betwen 40-55 and let off the motor will go all the way down to idle. So when i get back on the pedal it has to travel all the way up to 1700 rpms or so before it engages again. I switched to S2M and its so much better.

actually thats the S1 tune characteristics (regardless of if it's L,M or H)
the tune has a 4th gear torque converter (TC) lock ....
You have two choices:

1 Pick a shifting schedule. There are 2 shifting schedules you will choose from.


Shift schedule 1:

1 – 2 – 3 – 4 – 4+TC lock – 5+TC lock

Shift schedule 2:

1 – 2 – 3 – 4 – 5 – 5+TC lock

2 Pick a shift point – Low, Med, or High

Shift schedule 1:
For Shift Schedule 1 tunes, the LOW, MED, and HIGH modifiers will affect the 4th gear TC lock point, 5th gear shift point, and the 5th gear TC lock point.

Shift schedule 2:
For Shift schedule 2 tunes, the LOW, MED, and HIGH modifiers will affect only the 5th gear torque converter lock-up point.