Originally Posted by sarguy01

I was thinking about a dyno test between K&N and paper.

I cannot believe how many threads on this there are now.

Originally Posted by jram99

I have to say that I've used K&N filters on on my cars for about the last 6 years or so. I also use them on my Yamaha Rhino 660 for the air intake and the trans intake. I have never had a problem with these filters ever! I clean and re-oil them when they get dirty but have gone up to 2 years without cleaning them and still not had any problems. I have to believe that the people having problems with them are just not following the proper proceedure in cleaning/oiling/installing them. I'm not saying these other brands or worse or better but I am saying I don't believe that K&N would have been around as long as they have if their filters didn't really work. Not to mention that they give a 1 million mile warranty on them. I always keep a factory paper filter on hand so that after I have cleaned the K&N I can allow it to dry naturally for a few days before I re-oil it. I do think it has to be completely dry or the oil will just get sucked into the intake. I have never noticed any performance loss with a dirty K&N either. My yamaha 660 is riden at our place in S TX which during the summer is hot, dry and dusty. I've seen this filter caked with dirt a quarter inch thick with loose dirt in the air box but the rhino starts and rund great everytime. I'm not advocating buying one filter over another I'm just saying my experience with K&N has to date been a positive one and I guess to a certain degree their competetors have done a pretty good job of spreading rumors about dirt infiltration that I don't really believe is true. My opinion, take it for what it's worth and buy the filter you feel most comfortable with. I will say any of them are better than the paper filters. I have had trucks that wouldn't start before because the paper filter was clogged. Jeff.