So i finally pulled the trigger and ordered my HP Tuners. The first few things i want to do before i start really playing with my tune is tune out the rear o2 sensors and tune for the 160* thermostat that is one the way. Any insight would be great.

 

Do you have a wideband sensor or have one on order? If you want to tune the truck to run OLSD (no o2) all the time, then you really need to have a wideband so you can fine tune the VE table.

 

Yeah i have a wideband by Autometer

 

I would suggest spending some time reading the stickies in the tuning section and on the HPT forums there are some really nice tuning guides written.