what do you have to do to clean them and do they give you more power?

 

There is a cleaner kit. Where you soak the filter in cleaner, and spray it out with water. From the inside of the filter out.

Then you let it dry, and you spay on the k&n filter oil.


If you remove the air box lid, add a k&n filter, and jet the carb's up, you can definetly notice a increase in hp.