Getting delete tunes is difficult now unless you go outside of the US. You don’t want any Jo-Smho tuning it as our engines are temperamental with the emissions equipment. Finding an exhaust would be even more difficult though. Would probably have to have one custom made as finding pre-made units from Flo~Pro, aFe or MBRP is impossible anymore.On the one hand, I really want to delete, on the other, my DuramaxTuner seems to be doing a fine job and I won't run afoul of eco police.
Should you start to have issues though, and you want to keep the truck, I would look at finding a way to tune and delete it.