Thanks for speaking up Allen. I have never ran the box (lack of time) and a new engine and transmission. I have seen where you have run low 9's at ~ 145 mph. I went XFI (not because its the best either) due to my own time constraints. I'm somewhat familiar with engine calibration and control (worked at GM Powertrain for 20+ years in base engine including the GN & Turbo TA). Hartline even said this was a great unit. Its worth more than I'm asking per the experts.This looks like my old unit. I can tell by the manila tag on the harness. If so, this was a good unit and hope the seller gets his money back for whatever reason he is selling it for.
Allan G.