K&N Air filter questions

[robkay]

I know a number of posters swear by these. I've never used one, but I'm due for a filter change and am considering the drop-in one.

1. Any real world comments on how they affected your mpg?

2. Apparently at some point you do a wet clean and reoil. I imagine you would still check the filter at least annually and maybe remove it and tap out any noticeable debris. Do you ever need to blow them out, our do you just leave it alone until it is time to reoil?

Can't think of any other questions.

Thanks.