I have had my ecoboost for about a month now, I have noticed on 2 lane roads if I pull out to pass a car and really get down on it, that the traction control light comes on and it kind of loses power for a second, but then picks back up, I wouldn't think it would be trying to spin the wheels at 50+mph, mine is a XLT crew with the 4x4 off road package and 3.55 rear end