I keep telling everyone that if they use a top tier gasoline that the problem will clean itself. After you use it for several tank fulls you can use an old rag and just wipe off all of the black and the chrome pipes will stay that way. Anyone else with the same experience? Surely someone else has had the same happen to them... If you use a top tier gasoline - all the time - check your pipes. If no one else has the same experience I will just consider myself lucky and shut-up.

http://www.toptiergas.com/