ITE's can only hurt you, they don't really help all that much when compared to more important factors such as which residency you are from, letters of recommendation, research, pain-related projects, interview, etc.
If you had horrible scores, Ducttape is right in that they may wonder if you will have trouble passing pain boards as well. It is really more of a marker or a red flag to determine if there is something more serious to investigate. Having excellent scores is not going to help one bit if you have weak letters of rec or if you're a horrible interviewee. Just make sure you have at least average/good scores.