Working on a 2014 Silverado. While tuning WOT I notice the commanded throttle is 100%. But on the first rip it was 90%. Did some fuel tweaks and on the next rip it was 87%. Both times commanded was 100%. Is the throttle not opening all the way or am I looking at the wrong PID? I thought I read somewhere about this issue but I cant seem to come across that post again. Thanks