99sportcummins wrote:
done alot of research and cant decide on which one. kinda leaning toward kerma cause you can clear trouble codes and i dont have to send my computer off or buy another one, but want some advice from people that has experience with them cause im new to these.
First Welcome to LOST.
Maybe more research is in order
First off it's GDE. And they offer a couple of options you didn't list. GDE has a loader you can "rent" to flash your ECM without raising your hood then return it

It also will clear codes and if you deside it might be usefull you can buy it

It also gives you the abaility to switch between tunes. Or their exchange program where they send you a programmed ECM charging you a deposit that's refunded when you return your old one.
GDE's tunes have a number of often forgotten "features". The one I think is neat is my fuel guage now gives me true readings
There's also a "Rocket Tune" available.