K&N Air Filter
 

I have a '98 I just bought and I'm about to do a full tune-up. I was browsing AutoZone and found an air filter for $65 and it claims to boost HP. I'll put a link below, but I'm skeptical that it does what it claims to do. Anyone have experience with this filter?

-Zac

https://www.autozone.com/external-en...ter/257169_0_0

I have that air filter I don't think it adds any HP but it is the last air filter you will buy because you can clean it and reoil it .

you can get a 3" K&N universal air filter for about $42

Yes it may be the last filter you ever buy but you’ll have to buy cleaner and the oil. Also, you may want to buy two so that you can have one cleaned and dry to go in when the one is dirty. It is also hard on your sensors causing premature ( big word ) failure and replacement which is costly. Just my $.02!

The only sensor it is hard on is a air flow sensor and we don't have air flow sensors .

I don't know if you will get any HP out of a stock motor, but it is nice having a filter you can wash and reuse. I have been running them for years.l

K&n is really one of the worst air filters you can run.Take a look http://www.nicoclub.com/archives/kn-vs-oem-filter.html

im sure theyre awesome but i just see no gains except for the reuse and washable part where maybe you live on a dusty road or something but i just think replacing it with a regular filter is better and in cases easier.

I have yet to see any review where a k&n filters better then anything oem grade.A good oem filter is 5 bucks to 10 bucks the k&n is close to 40 and up depending where you get it the oil kit is 10 bucks and you get maybe 8 cleanings out of it.You'd have to own that jeep close to 10 years for that filter to pay off being reuseable.

I have had one in my F150 for 15 years, but no more than I drive it I only reoil about every 18-24 months and it isn't even really dirty then. I still use the original bottle of oil, though I will need a new one soon.

The one time it clogged quickly was when we had a bad winter and there was a lot of salty slush for weeks and that slush will clog them with salt very quickly. I think because the salt isn't soluble in the oil, so it traps it and pulls it out of the moisture in the air that is being sucked in. I wonder if a paper filter in very damp conditions wouldn't let some of that pass through.

The K&N is reuseable, thats the only pro i see in using it. Its a screen for air to pass thru. So is a paper filter. The K&N collects dust and dirt. So does a paper filter. The difference? The K&N can be reused. You can spend 40+ for a single K&N, or spend just as much on paper over the next couple years. For the typical daily driver, a K&N does nothing but empty your wallet. Gains are minimal, if any. They are better suited for high horsepower applications where the smallest change in airflow makes a huge difference. Stock builds, not so much.

Its all debateable, but thats my take on it.

I'm using the K&N that fits in the stock box. No problems here. I'll take it out and clean it one morning and let it dry all day. It dissent get very dirty anyway. It came in one of the Jeeps I have so I didn't buy it. Probably wouldn't have it otherwise. The Jeep I'm currently using it in had an open cone filter when I got it. Seemed all they do is make more noise and actually felt as though it was getting too much air. I quickly removed that. I also have a flow master muffler and no cat and I don't feel that any sort of intake is required other than stock. It actually seems to run better since I replaced the airbox.