I've got smoke comming out of my exhaust when i get on it a little. What could it be? Its not tuned and there is alot of carbon build up on the exhaust tip and rear bumper. It has a base map for 550's, but thats all. I know its probably from the richness of the fuel, but any other suggestions?

 

If its black your running rich!

 

Man i wish i could see it. But through the rearveiw mirror i cnat tell.

 

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