I have a 2011 LML with a mini-max dpf delete. The truck runs fine but I have recently noticed a rattling noise when the truck is idling. I took the truck to the dealership today and they seem to think it is internal. The service rep wants me to set the truck back to factory for some time and clear out the comp. My main question is has anyone else experienced a rattling noise coming from the fender wells? I actually noticed it a little before I put the H & S Mini on the truck but thought nothing of it. Any help would be greatly appreciated!!!