My first addition was a Predator programmer. Probably the best mod for the buck. I theen added a Good CAI. I am now saving up for a Corsa exhaust. These three mods can give you around 30 HP together. Without the exhaust I am getting 2nd gear chirps. As I understand from reading alot at this forum, the best additions in order of bang for the buck and HP is: a good Cat Back, Predator Programmer and then the CAI. That's my humble opinion.....Welcome to the Hemi bunch!!!