I can say that tuning the higher end of the engine has resulted in some impressive gains. The L96 likes more cam retard at the higher end then GM put into the stock tables. It also enjoys quite a bit more spark. I plotted the MAF g/sec and have increased that number by 54 g/sec over stock from 4400-6000 RPM. Havent put it on a dyno yet but more air = more power. Being and HD GM was understandibly conservative with the tune to keep it in one piece.
Thanks for the thoughtful reply and education, the support from the EFI team is awesome!