I have two trucks that belongs to my brother and my father I am trying to tune...both LBZs. One is a 2006 CCSB 4x4 adn the other is a 2007 RCLB 2wd.

The brother would like more performance and a little bit better fuel economy out of his 2006. My father would just like more fuel economy as he has plenty of power.

Any suggestions would be grately appreciated.

bump.....

I only have experience tuning lb7 sorry

That is the great think about Hptuners. You can compare different OS & see what peopled changed. Then you can use the compare feature & copy over what you want. Please check out their demo section. Bill did a great job with the demos. Check out the tunes on hptunes.com also.