ECU resets

Hey all I just wanted to ask when is it best to reset your ECU and wat does it do ? and how do you do it ?
is it best to reset your ECU after doing some mods ? is it ok to reset your ECU frequently ?
and how do you notice the difference and wat is the difference like ?

thx all

Check This Skyline Faq

Go to the ECU Reset Section... :)

http://www.faq.reel-zone.com/