shadyraven

Well the feedback below suggests K&N filters offers no HP gains. Better to run stock filter.

vx211

I have never seen on any car in my life a stock filter out flow a K&N..ill stick with my K&N

KobeCow

i'll stick with my $45 K&Ndropin filter.

shadyraven

So better flow equals more HP? Feedback here suggests otherwise.

Audi Junkie

they can restrict flow when clogged, but really a pleated paper filter is the best trade of capacity, particle size and flow. A paper filter goes 20k-30k, maybe more. A cotton filter should be cleaned every 5k. Foam? Whatever, that actually is limited flow.

vx211

maybe i dont need more flow yet, but maybe someday?

Pyroboy

I put a K&N in my truck almost ten years ago. It paid for itself in the first year and I clean it once per year, maybe. Also, I had a minor problem and K&N replaced it free, including shipping to my house. I'll put one in the Audi as soon as I get around to it.

Audi Junkie

That's my best info. K&N does not capture the smallest particles like paper does.