dirty86

does it really make a diffrence

i have Headers and RB exsaughst

white84GS

Some say it makes like a 1.2HP change, not enough to tell with the K&N alone. Personaly I couldnt tell any difference, but I have stock exhaust on mine.

mazdaverx713b

iTrader: (91)

claims better gas mileage. i dunno. i guess it feels better knowing that you have a better air filter and that you will have less of a chance sucking in toxins into the engine. i actually notice a slight difference in my ranger.

RotaryRyan

Ive heard people say they work and some people return them cuz they dont work and theyre expensive.

nevarmore

For my 85 GS:
K&N Fitler $45. Cleaning kit $10. Total $55.
Cheap *** bargain basement filter $5.

The K&N will go several thousand miles longer than a cheap *** paper filter and still flow well. You buy the
K&N once, but have to keep buying paper filters. You know someone who has a cleaning kit too, you can probably borrow it when your filter needs cleaned.

I run a K&N on my '65 Lincoln too. There is more power initially, just like with any new clean filter. With a K&N (or Holley or other washable oiled filter) that power stays around as the filter gets dirty. The paper ones just get all clogged up.

Wankelguy

I ran one on my '80 RX7 and didn't really notice any difference, but when I recently put one in my Fiesta, the difference was immediately noticeable with respect to midrange response. So it seems like the K&Ns make more difference on some cars than on others. I suppose this has something to do with how adequately the original airfilter flowed. Personally, I'm not wild about the prospect of cleaning and re-oiling filters so for now I'm going to continue running paper elements on the RX7 and the K&N on the Fiesta. Yup.

purple82

I agree with most of these comments. I couldn't tell any difference in my totally stock 12a Rx-7 or my Integra GSR but they will last the life of the car and require a minimum of maintenance.

YapaKanichi

ok listen guys, K&N is great and all but I was reading somewhere that a sponge material filter allows more air flow, as it does not filter any more dirt out that a K&N it does allow more air flow. I had a sponge type filter on my honda and noticed a far more better difference than the K&N. I looked on racingbeat and found a sponge type filter on there, I am most certainly when I get the cash going to get it.

Fuel524

it is about the durability not the HP since it is minimal though but good idea, i have seen the same filter too.

1984special

The filter is not the biggest restriction in the intake. Therefore replacing it with a K&N does not do much, but it is cheap... when you look over the long run. If you're not worried about smog you should look into entire intake systems, be it standalone EFI or good ol carbies.

I personally didn't feel anything with K&N stock replacement panel filter. However, people who have custom fabricated cold air intakes with a cone filter have claimed gains. And it's not as complicated or expensive as a new intake.

Hadoken

I don't know about cheap filters or anything since I haven't had to replace mine yet, but according to Victoria British, a K&N filter isn't too much more than a regular GSL-SE filter, and they last forever, so I might as well get one as long as it doesn't hurt anything.

elvisjer

K&N's are a great product, just look at that little fan and ping=pong ball display they have in some stores. On my Chevy 350 small block blazer, there was a dramatic difference in a K&N over a paper type, so in theory there IS going to be more HP in any car, noticble or not. THe sponge type airfilters DO in fact let more air through, but have a very short lifespan, and DIE when they collect moisture. When one of the sponge air fliters gets damp (living in Seattle, it will) it mixes with the caught dirt and sends a fine grimey-mud mix into your car. K&N's are waterproof/resistant and especially if you have a scoop, a better choice. If you can afford replacement MORE than paper filters, a sponge is a good choice. If you want a filter to last longer than your car, go with a K&N.

anthrax

I have one for my car. Stock 12A with the stock intake. I have not noticed any difference in performacne, However, I like it for the fact that you can clean it when you wan't to. I do mine every, or every other oil change. This way you know there is little to no restriction.

Disposable ellements become clocged and it can be difficult to tell if the element is cloged bad enough to cause a decrease in peroformance. With the K&N I am in controll of how clean my filter is, and the performacen I am getting from my car...

That is why I would recomend the K&N

1stgen_tn

It would be cool to see a dyno test done on a carbed 12a with and w/o a K&N filter. You would think more air flow at 6,000+ RPM would make a significant difference. I mean, if our rotaries are peaking power around 6grand, isn't that where you would start noticing the differences?

cdrad51

I got mine in along with a Bonez intake system, and when I was running on a huge exhaust leak. Under those circumstances, the difference was immediately noticeable, beyond any doubt.

1stgen_tn

Hey is your Bonez intake for 12a carb, or 13b f.i.?

Hadoken

I think thats it in his signature... 12A..with one rotor, hehe.

Tanjo

How about Cool Blue? Arent they the reusable oil-type filter?

cdrad51

That's right, a 6A...

Streetported engine being installed tomorrow yahooo!!

smnc

The big thing to remeber, is that RX-7's have a prety big air filter area fo the size of the engine. Unless your filter is REALY dirty, they don't tend to put a lot of restriction on our intakes.
On the GSL-SE's, the bigeest restrictions ae the AFM and the throttle body.
Although the K&N's flow better than stock, our intakes are bottlenecked elsewhere. If you were to come up with a CUSTOM intake setup, a K&N would probably provide a bigger benifit.

That said, I do have a K&N on my -SE.
I think it's a bette filter, and I like the idea of not having to throw the filter out then it's dirty.