I don't know if it's just me or what but the car feels much, much more responsive. I tried to duplicate the problem and NO LUCK yet. I drove it all day Monday and could not get it to hesitate. The car feels faster to me!! If nothing else, I can tell something WAS done. The only BAD thing was that they had my car for 2 days and gave me the only loner they had....LS430. Too sad for me huh. hehehe.