K&N
Who has replaced their stock air filter with a K&N? Are they really better? Improve performance, gas mileage, etc.
Forum Discussion
I used to use them years ago. Never again. They allow too much fine dust through compared to conventional filters. Perhaps not an issue in most parts of the country but in the southwest its a big issue. MPG and HP gains aren't noticeable. Just no reason to go back to them again.
