Root Root + OverclockWidget = Insane Battery Life 40+ Hours

[Granite1]

Should I update the radio's and aal that stuff from the netarchy site as well

What radio version and pri do you currently have?
2.15.xx is the newest radio, so if you have that you don't need to update it.
1.90.xx is the newest pri. Some kernels don't play nice with the new pri on some phones (mine included).
If you flash a different kernel and you see really bad battery drain or just general "weirdness" you may need to downgrade your PRI and NV.
Check out this thread, it may help you.

http://androidforums.com/evo-4g-all-things-root/276837-kernel-pri-questions.html

 

[steveo41733]

That helped alot, thanks for the info