Thanks for the info yall. This superchips programmer has never impressed me. It's definitely better than stock, but I guess just not what I expected. It feels like it blows through the converter and doesn't feel strong until the converter locks up. Once the converter locks, the truck feels like it actually has some power.
Guess I'll look into the trans and converter before adding any more power.

About the injector nozzles...any problem putting new nozzles/tips on injectors w/ 195k miles? The trucks runs good now. I've never messed w/ injectors on a diesel before.