I think @Riddler might be using the hotwire setup. Maybe he can answer some of the other questions. I, too, am curious if there are limits to the tuning capabilities of the stock ECU+hotwire+diablosport setup.
I'm not using diablosport. I've chosen to use HP Tuners for my build and it really can do everything. The shop I use has HP Tuners for GM and bought the Hemi key and has been getting good use of it. Once my car is on the road I'll be saving up to supercharge it.
