Ok your talking to a guy who's a muppe with this! So I assume I just seal the drain hole of the air filter then? Or am I missing something and there's a filter in the snorkel? At the mo the filter is at the front and did wonder how you seal it fully as the clips at the bottom I couldn't Imagen seal enough
leave the drain as it is - its designed to stop water getting in but will allow water out
there might be a crappy bit of coarse foam across the intake to the snorkel but that shouldn't be considered as a replacement air filter
it might be a good idea to post some image's showing what snorkel and what existing air filter setup you have to avoid confusion