Just a quick little update on this thread, I installed the LT5 throttle body and just got done tuning the VVE & MAF. Had to fight with a torque tables around 5,800 RPMs but it is now running stronger than ever.
Those E85 changes made a tremendous difference. I updated my buddy Sierra with the same changes and it turned his truck into a different animal as well. I appreciate you guys for all your input. Little by little I'm learning how to work this software.