what the deal with reseting the ECU? what does it do for a A/T? I have a 04 A/T thanks for the info

04 G35 Sedan Blk/Blk
Nissan Badges, Injen CAI, Greddy ehaust, Tein Coilovers

 

Resetting the ECU will sharpen your A/T shifting, but only if you granny the car a lot. If you drive fairly aggressively then the transmission's learning algorithm will learn and maintain aggressive shifting too.
Try a reset and see what difference it makes.
GSM

<font color=red>GSM</font color=red> <font color=black>Silverstone Coupe</font color=black>

 

how do you know it does that what proof does everybody have that it has?

04 G35 Sedan Blk/Blk
Nissan Badges, Injen CAI, Greddy ehaust, Tein Coilovers

 

Hard to prove. Only way to tell is in the 'seat of the pants'.
If the car has been 'grannied' for a long time, and the ECU is reset, you'll notice a big difference.
GSM

<font color=red>GSM</font color=red> <font color=black>Silverstone Coupe</font color=black>