I have a 5.3L direct injected 2014 GMC Sierra that i installed a turbo in and need help tuning it. I took it to a tunner originally who but a base tune in it and since then bought the tuning school HP tuner kit and messed around with it but fear blowing it up. The last guy confessed that it was alittle out of his comfort zone and there is no one local that is familiar with the new LS's. I am confident I can record passes and reflash the ECU but ideally like to find someone that is willing to remote in and do the latter for me. It now has cast pistons and connecting rods so its stronger but fuel system is stock, my goal is 650 hp.
If anyone can suggest a quility tunner it would be apprecieted.