The computer will shift according to RPM and engine load (full throttle, half etc) The computer reprogramers will allow you to change the shift points accordingly. For example a new cam, exhaust changes the max torque RPM from 4850 to 4400 and supplies more torque. After running the car some you decide that the shift need to occur at 4700, you can use the programer to chage it and make the automatic shift quicker (read harder) if necessary.
Basically the computer will adapt and you can force it to adapt to you specific mods.
Hope this helps
Hoen Lights, New Era Intake, YELLOW interior badge
Now: Running with the Devil!
YELLOW calipers and rotor hats with pads (brand undecided)