Looking to get a newer diesel in the next couple of years, most likely a 2013 or up. Are most people leaving these stock, or are the deletes are as common as it appears? I'd prefer to leave stock but it seems everywhere you look people are talking about deleting their EGR and DPF. I'm wondering if it's because it's only people with issues who post online and enthusiasts looking for performance, and those who never have an issue aren't as inclined to post anything. What experiences are you guys having with yours?