Very interesting test on air filters

[Zef]

Just wanna to share with you....I found it very interesting to read.....lot of nice info.
http://www.bobistheoilguy.com/airfilter/airtest1.htm

[the]

Been saying that for years. The stock paper filter on any decently designed car (which would include any porsche made in the past 30 years) is going to be big enough to flow far more than the engine could possibly use, even when half clogged.

Swapping out to a K&N, or whatever other aftermarket filter, does absolutely nothing except allow more particulates to get to your engine.

"In the end, paper or fiberous filters do remove more particles from the air before they enter your engine. The cotton gauze filters indeed offer better airflow. You have to decide for yourself whether you value ever last ounce of power or filtration. I cannot, nor will I make this decision for you. I do know that on a relatively stock car with a properly sized air filter, you indeed have very little if any performance to gain by swapping filtration material. "