Does it surge when slowing down and coming to a stop like at a traffic light? That's what mine still does.... after the EGR delete. Before that it was almost impossible to drive and wouldn't idle for crap (sometimes) which probably meant it was sticking.
I'm trying to determine if this last surging problem is vacuum related or what. Keep us posted, as it seems there a few of us with symptoms in this area.
Strange that it's mainly the AODE guys. What mods do you have?