Cold air intakes with a cone filter are fun. But if you end up off road, you are over exposed to the mud, dust, and dirt. Not to mention where they actually draw the "cold" air from and how much you spend on them! Oiled filters? Dry filters? High flow, or paper? Too much to consider! Improve the performance of the stock Xterra intake by removing the resonators and upgrading the panel filter. Now you have a less restrictive intake, great protection from the elements, a source of colder air, and even a bit more engine noise! All for under $50!