If you bought the dual remote bypass system, then yes, you need to buy the Amsoil Full flow filters. And actually, why would you not want too? They are made to last 25000 miles or 1 year, with their oil, and with the bypass filter, your oil is being constantly cleaned.
I personally changed my full flow twice a year and the bypass once, but I am probably going to just change them both once a year, or maybe every other for the bypass.