Interesting air filter tests

Air filter?

What is that?

I save money by not using an air filter. I just replace my engine every few years.

On a serious note you can add R to any wix part number and that gets you the race filter of that size. They dont filter for **** but they flow air.

We have done a few high power sand buggies/rails and they all run K&N with a foam element over them and a nylon over that.

We always find sand in the engines.....

In a street car the amount of dust and dirt is very low.