I would have to go look for which engine, but one of my Saitos has a muffler that has never been cleaned off and it is thick with bumpy dried castor. Looks kinda good. There used to be a kid who would ask me if I was going to clean it every time he came out. Too bad they grow up eventually.
No we don't
This 82 muffler is about three years old,i'm sure there are people with grungier one's than this but just in case there is'nt,i've added a grunge benchtop background for your viewing pleasure.