Stock 2012 (3.08 4WD) transmission shift and TCC schedules - tuning recommendations?

[mikez71]

Thought I'd put this up for anyone curious to see what factory shift settings are.
I plan to disable TCC in gears 1-4.

I believe pattern A to be tow mode and pattern B to be 4WD LO...
The 318 and 317 values are the stock settings that prevent the TCC from engaging.
(changing purple cells to those values)

Also plan on upping the normal shift speeds somewhere between normal and tow mode. (probably just the lower TPS% settings)

Some shift settings seem backwards to me (normal vs tow mode).. maybe having to do with differences in WOT TCC setting.
WOT normal 1-2 shift 31mph vs 35mph in tow mode (+4mph tow mode)
WOT normal 2-3 shift 61mph vs 59mph in tow mode (-2mph tow mode?)

WOT normal 2-1 shift 28mph vs 32mph in tow mode (+4mph tow mode)
WOT normal 3-2 shift 57mph vs 46mph in tow mode? (-11mph tow mode?)

a few instances similar to those in the TPS% vs shift speed map as well..

 

[mikez71]

Sharing my initial shift schedule tune.. Definitely better than stock. (Haven't really tested the higher gears yet)

Fixes the left turn shifting into 3rd.. stays in second and doesn't bog on exit. Downshifts less laggy. Good tractability at low speeds instead of upshift/coasting so it even feels better in parking lots. Revs to about 2,500 rpms when shifting under light throttle (vs about 3,000 in tow mode)

Didn't yet modify the 2-1 downshift, trying to stay conservative until I'm sure it's needed.. (going for a factory type tune with the lag and bog dialed out)

Stock tune


new tune


difference


----------------
update: Lower the 3->2 downshift speed, could feel a little engine braking bump on coastdown. Most obvious thing I noticed driving around town. Have to start datalogging and highway driving to fine tune. Images are still initial tune.