[Bandit9]

I always use a scotch brite pad or a Brillo pad on the outside.

If you really want to see a performance boost, clean out the carbon build up inside your pipe. It is quite amazing how quickly and how much carbon builds up inside your pipe. It is also amazing how much better the bike will run. Pull that pipe off and clean it inside and out.

Set the pipe down on concrete, place a propane/cutting torch where the flame is blowing inside the the pipe. Let it heat up real good. Then take a handful of pebbles or small rocks and throw them inside the pipe. Put on gloves and cover each end to keep the rocks from coming out, then shake the sh!t out of it. Dump out all the carbon. Repeat a few times.