Originally Posted By: D Bone
I was born here, and have lived here my whole life. I have raced/ridden motocross for most of my life, so I am very aware of how important a clean intake tract is. I have used a K&N on all of my applications (cars/trucks/Razors/Rhinos) that require a non oem filter. On the few toys/vehicles that I don't modify the intake, I just run oem/wix/napa/ect.
The DF looked fine to me. I cleaned it, and examined it pretty thoroughly and found nothing out of the ordinary. I saw a lot of the same tests as you, and that's the main reason I bought it. A S&B filter is the same design as a K&N, but it supposedly has more layers of cotton, which is supposed to filter better.
Here is a link that has a few tests, including both a K&N and Dry Flow:
http://www.australianauto.com.au/HTML/Images/Air Filter Shoot Out.pdf
Whatever the reason was for the intake contamination, has me more then a little irritated that I ran the truck for over a year like that. This was the first time on any of my modified vehicles, that I didn't install a clean & oiled air filter during my oci. I always buy two filters, so I can clean and oil one at my convenience, and then it's always ready to go........I won't make that mistake again!
Yeah, I had seen that Aussie test. I'd rate it rather below the SWRI tests for gravitas but it was one of the better magazine tests I had seen. It's really past time for an objective test of all the "players."