from the research i've done the shifting is all controlled through the governor, which is pressure activated, and it is located in the tailcone of the tranny, so basically i've come to the conclusion; keep fluid clean, make sure it doesn't overheat via clogged lines/tranny cooler, and drive it. when i pin it it down shifts, when i let off the gas it upshifts.
i'm not picky, lol
92 YJ ~ locked/33" swampers
05' WK Hemi limited ~ wifey mobile
13' Chevy Cruze ~ boo
13' GMC Sierra ~ 2.5" lift 33" MTs.
RIP 95 ZJ ~ 33s built/longarmed/locked/awesome Feb 2014 ZJOTM winner