Help with tree hugger crap asap please

I'm putting all the emissions stuff back on to trade the truck in now I'm getting a diesel particulate filter restriction-soot p2463

Truck is a 2011 Denali 3500. Had the H&S with 5 inch exhaust. Everything plugged in and code comes on almost as soon as you start truck and goes in to reduced power mode.

Here is my number if anyone can help asap. 330 240 two zero zero 9

Dumb question, but did you forget to put the tuning back to stock, too?

You're going to need to get some data screen shots, there are tons of possibilities.

Was the system stored with the ends capped off?

Did you check the pressure differential lines for debris?
Are they hooked up right?

Try a manual regen, was the system possibly plugged before removal and that is why it was deleted?