Which airfilter for should I for the dunes? Was thinking of regular K&N, might take off airbox, but its a pain in the *** to wash though.

 

Get an outerwear
If you have the stock carb leave your air box alone, do a search to see the story on it

 

Im a K&N Fan, but you also very much need the pre-filter. If you do that, you should only need to clean your K&N main filter to once a year. The sand can get choppy where I live, and the K&N filters are very tough. The K&N part number for the stock replacement filter is 22-8031PK.