w/ the 2009 4.6 i drive (33k miles), i've noticed many times now that when i floor the car hard off the line w/ the esc off , the car will take off and the tranny will suddenly knock hard in first gear and the rpms go down to 1 thousand. however, i don't think i have experienced this w/ the esc on. could be unrelated to the esc- ? i don't know. other than when i accelerate hard off the line, she drives fine and shifts smooth. any thoughts?