Very common issue with the braided stainless on the inside as well. Just cut it out and make sure to check the turbine wheel. Usually some of the wires end up in there and hurt the ehaust wheel. The ones I bought were ROL I think and they had no braiding on the inside.

11.67@118 1.88 60' with only 7-8 lbs of boost. Turbocharged, megasquirted, 407 BB, 440 source heads, roller cam, 9:1 comp. http://s292.photobucket.com/albums/mm14/beansgracie