Well the truck went to the dealer yesterday, Its been doing some things. It will build boost until it de fuels the motor (over 30LBs). Then it won't build any, the EGTs go way up when this happens. And there is no turbo Whine; after a couple of mins it comes back. The tech @ the dealer has no idea he said that the EGTs shold'nt be climbing if the turbo is sticking. I was thinking maybe the wastegate is sticking closed and the blowing open from alot of boost, and the sticking open. This is with the Six-Gun plugged in, the motor would not build up to 30lbs with it unplugged (stock). He did however pull some EGR realated codes out and replaced the EGR valve. Anyone ??