Get a tunner/programer
Get a Tunner/Programer. It's worth it. I got the Superchips, it was easy to use.
You'll find alot of different recomendations when it comes to tunners/programers. They all work great, just need to decided how technical you want to get. The Superchips are real basic, and easy. Mine was worth every penny.
Good luck. The tunner will unleash the tiger under your hood.