I'm having the same issues. My truck has been puking for quite a while now, I have the EGR delete, SCT turned off with Innovative X street, and the other day after "driving" through over 2 feet of snow, puked BIG time while being easy on it. Added coolant, returned to stock programing, no more puking. Then I reloaded X street, and lost over a gallon of coolant. Studs and gaskets where already on the way, will be installed during the next week, will tell you if problem is fixed.