On the few cars i have mapped so far i tent to get them to drive around normaly en get most of the light throttle loads sites done. Then i get them to go into 3ed at low revs and floor it untill the turbo starts spooling then ajust it to get the switch over as smoth as i can. As for the flat out stuff i just get them to start low in the rev range and hold it at WOT till they hit the limiter or run out of room lol.