Make sure you have higher octane fuel in your tank if you're running a high octane tune. Never run a 91 tune on 87 Gas!
I run 94 octane gas with a Diablo 93 tune
Maxed out all my rev/speed limiters, shift points and throttle boost.
Ram runs like a scalded dog! intake and exhaust mods sure help too:
Intake: DYI Ram Air, Huge Airaid CAI, Fastman Throttle Body
Exhaust: Magnaflow Y-Pipe + Magnaflow CatBack exhaust. (JBA Headers on order)
I haven't been Dyno'd yet,
but I have several 13 second slips from the Drag Strip