As a bit of info, I just ordered a PFC for my Auto 1JZ today from Nengun. I'll post up details of the PFC if i can do anything funky with it like change shift points for the auto and modify the VVTI. Otherwise i'll just post up dyno's of the pre and post tuning
Lucky for you, the JZX100 is the only automatic car supported by the PowerFC. Yes you will be able to change shift points from the hand controller on the fly.