When I bought the FXRP it had a breather. It was a PITA to keep clean and looked like hell. Put it back to stock and have noticed no difference in performance but a big difference in appearance.
Thanks Magnus, I don't know much about breathers but I did notice a lot of oily grime on my air filter. I have a K&N on the way and I'll be better being able to clean it. Thanks again!