Yes, a K&N filter does provide an advantage, in racing, but I do not believe, any more, that it benefits the average consumer, unless you want to put the sticker on your window. I can buy 4 paper filters (4 years worth) for the price of the 1 K&N that will return negligible gains, if any.
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Plus the paper filters were maintenance free - remove, toss, and replace. I thought I was "saving the plant" and "making mad power yo" by using a reusable filter, but after several years of doing the K&N thing, I went back to paper filters thinking that my ONE paper filter wasn't going to hurt the planet, and how much power can a 1.6L 4cyl make anyway. So, you either have a "spare" paper filter to drop in while cleaning the K&N or you just don't drive the car for several hours.įor me, after doing to whole K&N thing on my (non-turbo) Mazda 323 LX, I found it was easier to buy good quality paper filters about every 12 months. You clean it hoping to not damage the filtering element, then you have to let it dry completely, and then once it is fully dry it can be oiled. The thing that got me was the cleaning of the filter whether is was every 6 months or 12 if you do not have a filter to drop in the car while you are cleaning the K&N one, you cannot drive the car. If you use it sparingly, you should be fine, but there is always the chance of over oiling. They (K&N) die the oil red to let you know where you put the oil. If you follow the instructions on the box, it shouldn't be too much of an issue. Don't let the in-store demonstration displays fool you.Īs far as getting oil residue on the MAF.it all depends on how much oil you get on the filter. Your ECU will compensate for the amount of air being let in past the filter paper or cotton or other material, and the marginal increase in flow will not result in gobs of extra powwa. I'm sure the oiled cotton filter element can flow more air and maybe catch tiny particles because of the oil, but in the long run, the K&N isn't worth the $ or the trouble. This did more to increase engine performance and gas mileage than the K&N did. My homemade version of a cold air intake, if you will. I removed the entire baffle from inside the wheel well, and cut holes in the front part of air tube to be able to draw air from the front. Has it saved me money in the long run? Absolutely.Īre OEM filters good? Of course they are.įYI, what I did with my Nissans to increase airflow, was to reduce the obstructions in the air box and air tubes/baffles leading to the air box.Īs an example, the Pathfinder has this ridiculous air intake baffle that draws air from inside the front wheel well, up through this stupid baffle system, and then eventually to the air filter box. I've used them for 10 years with no negative effects.ĭo they give the added performance that some claim they get? Not in my experience, no. You know better than to just make a blanket statement like that without at least explaining why you see it that way.
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