I can only comment about the Diablo Predator handheld Pwhite
1. Yes you can change your shift points 1st to 2nd.. 2nd to 3rd gear shifts + or - 600rpm (5600 stock) same goes for rev limit.
2. You can max speed limit north of 150mph with Diablo also.. 93 canned tune I believe is already set at 155 mph but is adjustable
3. Economy tune? .. the Diablo has an 87, 91, 93 canned performance tune
Go to each website and see what parameters are available for adjustments and see what fits your style of driving.