Is an off the shelf tune one that is mapped out by a tuner and is something stored in the computer as Stage 1/2/3? In other words, say a person has hardware for a Stage 2 tune. Does the tuner simply put the exact same Stage 2 map on Joe's ECU as they do on Tom or Betty's ECU? OR, does the tuner do anything else that is case specific? I.E. Say Joe has a TD04 and 3" DP while Betty has a TD04 and full 3" exhaust. Does the same Stage 2 tune get sent out to Joe and Betty or does Betty get a little different map due to having the bit more free flowing cat-back?