What are the benefits/drawbacks of a freer flowing air filter?
Free flowing air filters such as K&N can provide a minimal increase in power (maybe 5 HP). The materials they’re made of allow air to flow through much more freely than through stock paper air filters. The drawback to this is that more dirt can also pass through the air filter since the pores are usually bigger to allow for freer air flow. Some people have claims that the filters are great, while others think they only foul up performance due to the dirt they allow in. The jury seems to be hung on this issue.
