err....not exactly. For one, a properly oiled filter shouldn't be gumming up your engine bay with oil. You could also go with a dry filter element. The Gen 3's and most CAI designs also relocate the filters ahead of the radiator support, which means there's no way oil & dirt is going to make it all the way from the filter to the engine block, unless your filters are complete garbage. The OEM intake, although a great design, is not a true ram air intake. The inlets are obstructed by the front bumper. When you do a dyno run, you also try to simulate airflow from the front with some fans blowing. There are benefits to keeping it stock, but it's not because of performance. You don't gain power with clean filters, you lose them with dirty ones, regardless of intake design. An intake can mess with the AF ratios....but then again, so can the exhaust system.
