I have a automatic and was thinking about a handheld programmer (superchip,hypertech,diablo,etc.). I want to firm up my shifts but I was talking to a guy at the dragstrip and he said his messed his transmission all up. Have any of you heard of this same thing happening? Would it help my car any in performance? Here are my mods: 2000 Mustang GT (automatic)
cnl mass air
cnl inlet tube
cnl intake plenum
bbk 70mm throttle body
kn filter
slp loudmouth exhaust
cnl mass air
cnl inlet tube
cnl intake plenum
bbk 70mm throttle body
kn filter
slp loudmouth exhaust