I was wondering my exhaust tips use to be silver and now due to the test pipe my exhaust tips are all starting to be black, like even the top and bottom and don't get me wrong I like the test pipe and the sound but now it's starting to make my tips looking harsh and the thing is I don't want it to be permantely carboned up, if any of you have suggestions let me know, i'm thinking about using wheel wax on them and hope it helps.

 

Add an x-brace!

 

clay bar to clean the exhaust tips and the bumper

 

You can use metal polish to remove the buildup. Nothing you can do about it reappearing.