The reason why I used a K&N is because of the experiences I had using them in every car that I have owned. Plus the fact that they are very cost effective when you can get them for about the same price as a paper filter (through shopping around). There is a difference using the dual snorkel with a K&N VS. The Paper filters. The difference in the improved in acceleration and milage is noticable. Many people have tried to Dyno their cars with and without a K&N and see little difference. The biggest diff I have felt is when moving I get more ram air because of the Dual Snorkels and a less restrictive air filter. I like being able to buy one filter and use it over and over. I have never had a problem with one and I dont think I have one now.
1979 300SD 255,000 miles (sold)
1989 Jeep Cherokee (wifes)
1991 420SEL 196,000 Miles.