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19 Posts
Can anybody tell me which engine is in my 2011 CTS-V coupe? It's all stock.
Also, Anybody have advice on a product to get rid of the carbon burns in my exhaust pipes? I polish them, but the hard-core black stuff does not come out.
Also, Anybody have advice on a product to get rid of the carbon burns in my exhaust pipes? I polish them, but the hard-core black stuff does not come out.