Sorry if this has already been posted but i have not been able to find it. Do the nismo dual cold air intakes need to be cleaned a specific way and are they dry flow filters or wet flow?

 

Dry flow...AEMs. wash em off with mild soap and water. I've had em on a while and these things stay pretty damn clean on the HR! Haven't washed em yet. Hint..ya don't need to take off the intake pipes to remove the filters...just losen the plastic duct brackets that are pushed up against the filter. You can then ease em out to clean or replace.

 

Believe they are washable. You will soon find out when you put them in a bucket of soap and water.

 

Thanks for the help worked out great