hey im sorry i already posted in the 4.0 forums, but i think id get a quicker response if i do it on the main page. ok, my problem goes like this. i recently bought and had installed flowmaster AT true duals, and they have been running flawlessly, but as of recently, every once and a while, i get a rattling sound, which seems to me to be coming from the left muffler...now.....is this a reason for panic? is it a common problem? is it a simple loose bolt? any help would be immensely appreciated guys, thanks

 

anyone?

 

patience foo. It could be your muffler clamps hitting metal. Lift your car up and you'll find out for sure.

 

Read this thread.
https://mustangforums.com/m_1237975/tm.htm

 

i hope its nothing that bad...im gonna take her to the installer tomorrow and see if they can do anything