K&N has one of the best air filters on the market I have run them on motorcycles and cars and trucks for decades the easier you get air in and out of your engine the more power you can develop plug up one of your nose holes and try to breathe that's what I'm trying to explain one nose hole plugged is your factory system acts like let them both open that's how K&N works get it I hope so they make great products for the power guys and gals
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