You will need something like the predator, bully dog, or super chips in order to accomplish this. I am not sure if the "tru speed" is out yet for the LBZ, but you might do some searching.
I would ask someone in your area with EFILive and V2 hardware to recalibrate for the tires and put a nice tune in...I would but I am located in Germany
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!