loud with TC450 pipe (2006 TE450)

I forgot how loud this thing was with TC450 Ti pipe installed

http://www.youtube.com/user/robertaccioHVA?feature=mhum#p/u/1/jUXmrzrJGo0

http://www.youtube.com/user/robertaccioHVA?feature=mhum#p/u/3/fcFhHm49EPw