Review on Flowmaster 8430152 Super Muffler 409S by Dhoal Black

This update I've had this muffler for less than a year, there is an odd rattling noise which I didn't realize was the muffler when it was first installed. I don't remember hearing it often, but I know I hear it every time I'm driving badly. I read some comments saying it wasn't noisy, believe me it is. I got it on v6 after a cat with no reonater and it's insanely loud