So I rode the bike about 200 miles before taking it in to the dealer. He asked if I had any codes, I said before the ride this morning, no. He did his check and there was P1003, he then hooked it up to his diagnostics and that was the only code. He changed the system relay and said let's ride it for a while and see if it backfires anymore, since I could not get it to backfire since I thought why not. While he had it back there he corrected the wire for the HD symbol on the Daymakers, that got left undone from the work before, he also rerouted and tied off the battery tender cable.