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Right now i have vance & hines slip ons and i believe i have the stage 1 download. It is a 2005 flhr. I friend of mine ahas a vance & hines true duel header system if i want it. Will i need to add the fuel pak also? And how do you really tell if you have a stage 1 on the bike?
If you mean how can you tell if the bike has the stage I download, get your dealer to hook up his computer and he can tell you. Other than that its pipes and a high flow air cleaner.