Hi Chris, I have a 99 Road king Classic. Bought it new in 99. after I hit 1000 miles I replaced the stock mufflers with Sampson Fishtails and had the dealer do a Stage one Airflow and remap. I have never had any problems and the bike runs great. I have a buddy that has a 99 Road Glide Fuel injected. he just went to a 95ci with Cams(Stage II) --no problems.