The really good thing about these types of aftermarket ECU's is, the tuning software comes with them. You don't have to buy license credits from HPTuners to bust into your GM (or other) ECUs.
And mind you, I'm not a tuner. I'd have to take it somewhere to get it done. However, whenever you tune a car, you have to pay for the license credits and most tuners who do GM vehicles are using HPTuners software to make it happen ...
Again, though, I think I can find a tune repository out there which will match my build without too much of an issue.
I'm sure burning EPROMs would be a LOT cheaper than taking it to a tuner.