I bought an ED 2 weeks ago and have put on 1300 miles already. Mixed driving and highway. Flawless so far knock on wood. One thing is certain. Something to monitor regens is a must for any 2011 or newer diesel. I just took a 500 mile trip today and witnessed one regen on the road and one started just before I got home. I would have shut the truck down not knowing the difference without seeing the high EGT on the Scangauge II that I installed last weekend. Money well spent.