I have had three Titans over the last 20 years but just got my first diesel. A 2016 XD PR 4x4 with just 23k miles. Overall I love this truck. But it does have a pretty serious lag at take off. I’ve seen some of these diesels on you tube that have been deleted and than sound and move like rocket ships. Could somebody speak to me on what this is all about because I’m new to this and really need help on understanding this! I’m sure the restrictions in California are much worse. Talk soon!