custom tune

Different places can do different things.
Here's one place: http://www.bgperformancepcm.com/
Here's another: http://www.hotwireauto.com/?page=sales-comp
Some things can also be done with the factory chrysler scan tool you can rent one here:
https://www.techauthority.com/Documents/en-US/Chrysler Scan Tool Rental Information.pdf

Inertia Motorsports is one option for custom tunes using a Diablo Predator. I think this is the route I will likely go since I am also thinking about a cam upgrade.