Oops, I am assuming here no one got creative in taking things apart and misaligning burner. The loud jet engine like sound also suggests the burner is running air rich. If it has the shuttle that can be turned to cut the air back down, close it some to reduce the roar.
Steve and Andra
2012 F350 6.2 gasser SRW LB
Fab Fours front and rear in case we run into a rhino
2019 Northstar Laredo SC