all right this is what the dealer said was wrong with my truck, first the airaid intake tube and the mbrp are causing the the truck too run bad. the dealer said to put the stock intake on then they can continue to fix it. so i put the stocker back on and well same issue as before, brought it back and while the tech listened to my truck knock and vibrate he disided to tell me he has had no diesel schooling, well i went off----- pulled every body involved into the managers office and found out exactly what a piece of junk dealership this was all the info they got was from the internet and thats diamlers regulations all they did was a at idle LP test and a at idle rail test which came back fine. but i dont have a idle problem---------- they finally broke down and said we are not qualified to determine the problems with your truck. so i set an app for monday with another dealership with real certified diesel techs. i will let you guys know what the results are. thanks