Who told you this? And what do they think comes from burning hydrocarbons? (GAS) Perfume? Of course the inside of the pipe is black. Be troubled if the sevrice engine light comes on, and you have black smoke comming out of the tailpipe! Stick your finger in ANY exhaust pipe and see what color you come back with!
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Monday, May 5th, 2008 AT 5:03 PM