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Message: <blockquote data-quote="Fred W" data-source="post: 997701" data-attributes="member: 3828">Looking back to your original post, you said "the pipes are turning blue and the muffler is turning brown."Most of the responses have been in regards to the first half, ie the header pipes turning blue.  That is completely normal.  If you leave them alone they will progress to a fine brownish gray patina that indicates you ride your bike and don't fret about polishing it.The second half is a bit more troubling.    I have noticed the mufflers themselves taking on a dingy yellowish tint, but only when they are really dirty. However, I'm not sure that is what you are referring to. Perhaps you could take a picture for us?  It's  also possible that someone did something dumb like putting car wax on the stainless steel cans.  That might turn brownish as it heats up and burns on.Most of us do keep the exhaust cans relatively clean and shiny.  Afterall, unlike the headers, they are hanging right out there for all the world to see.  So a little metal polish and a lot of elbow grease will get those cans back to looking new.  But you really shouldn't have to do anything special to the cans on a regular basis for them to stay that way.</blockquote>