i have dyno max 3'' on my car and only after 2000 miles the baffels are rattiling that bad i dont even want to drive it sounds like **** and is hard on the head when driveing. other than that when new they sounded good with no or little drone.
Do you have the Dynomax VT? If so I was concerned about them rattling. Moving parts in a muffler worries me. Someone posted a reply he got from Dynamax about the VT rattling in another thread. Then said you need to have a cross connection to avoid it.
sorry for the late response but i have the 172221 ultra flows did anyone here ever do any surgury on these mufflers. im considering doing a little surgury to see if i can fix the rattleing .and sometimes it sounds like its chokeing flow off also