Clayten

If you are like me and wondering what air filter is ok and what one is not, here is some links to some interesting testing done.

http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm

http://www.bmwe34.net/E34main/Upgrade/Air_filter.htm

I wish that there had been a oil bath filter in the test. I am interested in hearing other comments.

Begle1

Well, I'm impressed.

Of course, I'm too lazy to dig through all that data, so what's the conclusion? I mean, WHO THE HECK WRITES TEN PAGES ON FILTER DATA AND DOESN'T WRITE A CONCLUSION!?!

Golly, I don't need the graphs, I'd settle with a smart guy saying "purchase the UNI"...

Clayten

How could you know if there was or was not a conclusion if you didn't read it?

Begle1

I'm a good student. I read the last page.

How I always pass (or not pass) my school classes.

BC847

Well if one were to draw a conclusion, it might be that the K&N flows a lot of air . . . . . .. and dirt.

STACKED

well that sucks for me guess I will be changing back to the BHAF.

supr

I think if you check around on K&N, some have good luck, some don't. Seems like if you install them & not clean them for 50-100k, they work better Also,using grease to help seal in the stock box.
I check my turbo wth each oil change, since I pull the boot to get to the oil filter. Spotless, so far.
I belive the filter helps mileage, power. doesn't cost much, either.