I can't speak 100% for Dave.... BUT I do recall him saying to do a "mailorder" chip he would need the dyno chart WITH A/F ratio at the very least. If you have a way you can provide MAF voltage compared to RPM I am sure that would help a bunch as well. If not make sure you give him a COMPLETE list of EVERYTHING done to the car and possible even brand names of parts used. Definately let him know what MAF, TB, Supercharger mods, supercharger overdrive, Stock or 180 degree thermostat, exhaust (stock or whatever).
He may not need ALL this info, but the way I see it, I would rather send too much than not enough. Best bet of course is to contact him directly as he will tell you exactly what he HAS to have to do your chip/tune.
Tracy