Im new here but anyways I have a 2011 mustang GT premium with 18500 miles on it and recently went to the ford dealership for oil change service and the day after I notice the car ticks when idling. What the heck is that?? I have a steeda cai and bama 91 race tune equipped. I am going to get that checked out soon and I was wondering if it's ok to leave the tune in or will they overwrite it or something?