I currently have a feed to which I have added two different types of filter.
Users would want to subscribe to a filter within a feed rather than the full feed.
These filter options change all the time so I am not sure how I publish them as individual feeds.
Is this something I can do via pipes?
I would really appreciate any help or guidance.
You can. By using the Filter module and the user text input module.
http://pipes.yahoo.com/pipes/pipe.run?_id=38db2354a8498dab97172170656e2470&_render=rss&textinput1=apple (rss output)
where textinput1= would be where you enter your filter criteria.
is my example pipe source.