Finally decided to join a forum for general knowledge for any unsightly future problems. My truck is a 2018 f350 35xxx miles had since new. Egr/dpf delete at 26xxx miles.Ez lynk 50 hp "tow" tune and 5 inch exhaust. 100% of the time I am carrying an approx. 2,000 lb payload and tow a 9,000 lb camper around quite often. First diesel truck. So just here to learn a few things for self diagnosing problems since I'm on the road alot.