I just got a pro-flow with the foam filter and was wondering how is everyone that uses a set up like this run it? It comes with a primary filter and a secondary/wrap filter, do you use both or just the primary and if you use both should you only oil the secondary/wrap?

 

For sandy conditions I would oil the primary and leave the wrap dry.
Real dusty and dirty I would oil both.
For somewhat clean drag racing I would just use the primary oiled lightly.

 

I have that setup and run the primary lightly oiled with the Outerwears Prefilter. It keeps it much cleaner and breaths real nice as well.