For those with banging pipes:

For 2 years I have had this pipe that is crazy loud banging into a stud. I was going insane. Finally drilled a small scouting hole through the floor above to find it. Once you push the carpet back you can’t even see it. Then I made the spray foam dispenser 9000, and attacked it from a recessed light hole from below. Missed the mark a bit but it was enough.