For clarification, modifying the exhaust system of a NSPS (New Source Performance Standard) engine is a FEDERAL CRIME. Fines are 6 figure for first offense AND jail time.
There is much federal debate right now if light duty diesel pick ups are covered by NSPS regulations.
The EPA recently hired 200 inspectors to start chasing industrial emissions fines for a revenue generation stream, I can promise you 3 NC companies have been fined in the past ~90 days.
I will repeat, as someone who has made their living in the diesel engine world for over a decade and is heavily tuned in to compliance talks, there is NO WAY in hell I'd delete a 2015 vehicle. I might even hesitate to drive a friend's unless he was in the cab with me.....
(For anyone wondering what NSPS means and its relevancy CFR 40 C 63)
Subsection zzzz consumes ~20 hours a week for me in education and compliance verification