What is the wool type stuff that comes out your exhaust?

The only thing I can think of is a wool like packing material that may have been used in the muffler. Never seen this myself. I suggest you seek out a good muffler shop.
The only thing I can think of is a wool like packing material that may have been used in the muffler. Never seen this myself. I suggest you seek out a good muffler shop.