K&N Filters

[YarisOwnersDad]

Some of my Jeep buddies were finding dust DOWNSTREAM from their K&Ns in the air tubes. I have heard of other cases like this, also, but I don't personally know those other people.

If a filter is less restrictive to the air passing through it, then one must ask the question, is it still as efficient at trapping the dirt as the conventional paper filter?

If there really might be some slight HP gain or some slight MPG gain, I would still not want to risk using a less efficient filter. From K&Ns own HP comparison graphs, it appears that the extra HP only comes at WOT, and how often are we going to drive like that?

I'll stick with the old fashioned paper filters, thank you.

Tomster