I opted for the partial delete; I’m very happy with the outcome. I wish I would have done it years ago. I’ve put about 1000 miles on the truck since and tried all the tunes, they work great! Two things to think about; is during the install, one of the instructional videos suggests cutting out the CAT, which looked pretty challenging, I opted to simply remove the transmission cross member and remove the CAT intact. It only took 30-40 minutes and made installing the new 4” pipe a breeze. Additionally I have a functional CAT that can be repurposed; the CAT goes for about $3000 USD new. Additionally, I noted that exhaust braking was diminished a bit after the install. While pulling my 11,000 lbs trailer, the exhaust braking was not as effective. I am assuming this is because I removed approximately 6 ft of restrictions (CAT and DPF), but just something to think about. Overall I would absolutely do this again!!