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ASK: I am a first year ATV enthusiast and have collected three different model quads all with different style air filters. I want to get the straight scoop on the difference between the foam style and the K&N type air filters. As for cleaning, I feel the K&N is easier with less mess and smell from the chemicals in comparison to the foam style air filters and the cleaning products used with foam.
Also, I have a hard time believing all the hype about K&N air filters adding more power. I like K&N, however the foam air filters seem to work fine. I have not noticed any difference in power switching air filters types.
A Suzuki shop told me to never use K&N and use only foam types if you're riding in the dirt. He said K&N lets fine dirt into the engine and the intake valves will be the first things to go.
Let me know what you think?
I have to admit that you've accumulated a large quad collection for a rookie and when you eventually learn to shift gears, you will certainly enjoy these toys. We're all glad that you've fallen in love with the sport like we all have and want to steer you in the right direction. For many people the filter debate is like asking which truck is best, Ford or Chevy. I think the choice really depends on where you live and how much splashing through water puddles you plan on doing.
If you live in an area where you are likely to encounter water or plan to enter a GNCC race, we'd say stick to the foam filters. These filters are more water resistant which means they are less likely to let water pass into your engine when splashing through a stream or a puddle. If you live in a drier area, then by all means run a K&N filter. These filters do allow for more airflow, which can definitely increase your power, but not in a way where the bars are going to be yanked from your hands when you hit the throttle. They can pass dirt if you don't maintain and oil the filter properly, but this also holds true for foam filters. Our Associate Editor, Eli Madero is a California sand flea and loves to run K&N filters on all of his machines when taking them through the desert where there is no shortage of dust, sand or silt. He has never had any problems. I live and ride in Georgia and never know what the weather holds and for this reason, I personally prefer a foam filter. We may use different filters but we do agree that Chevy makes the best truck! Hopefully this info helps to filter any BS that flows through your ears.