Originally Posted by THE TECH
The stuffing is only needed when you leave some holes perforated. When you do it like Bart has done, there is no need for it anymore unless you just want the muffler to be nice and snuggly warm.
Dude you are not getting it. The middle part of the muffler is not even opened in this method of modding. Pipes or exhaust is not even entering the middle of the exhaust. Therefore you will not be taking the stuffing out just for the sake of taking it out and having to cut open the middle for absolutely nothing. For all intents and purposes this mod basically "deletes" the middle of the exhaust and it is simply there to support the two ends which are the "muffler