Is it possible to save/extract various Tunes off of your ECU? I am most likely going to buy a USED GIAC ECU, but I don't want to use the GIAC Sport tune, instead I'm probably going to have EPL do a custom tune for me. Thing is, I don't want to lose the GIAC tune by simply overwriting it w/ a new one. Is there a way to copy it/save it/extract it so that I may flash it at a later date should I choose to do so?

PS: I have a 2002 S4 B5