choice of air filter?
 

I got one of those nifty afm adapters from track dog, now its time to choose an air filter. My friend has some fancy one with a special funnel at the top that supposed to make it flow better, but it was like $100. others say k&n's are the best. what does everyone here use? also, whats the best place to order? Thanks

i've used K&N in the past and havent had many complaints....best place to get one is a local speed shop.... i may try a HKS mushroom style i hear they are pretty good aswell.

K&N RU-5111, small, cheap and works.

what are your opinions about the filtration abilities of the K&N?

unfortunately i think the adapter tdr makes is a 2.75" opening, otherwise the ru-5111 would be perfect. Hows the length of that model? Do you think you can fit something a little longer? Also, while looking for that model i found the "x-stream" model. pretty cool and not that much more
http://www.knfilters.com/search/prod...x?Prod=RX-4870

who gives a rats ass about filtering abilities....k&n flows more than paper, Mesh flows more than K&N style....the more flow, the less filtering.

http://jeffwittrig.com//images/Air_Cleaner_02.jpg

this one used to be on my car (not my greddy kit), now i think Samnavy has it.


this looks promising: SN-2590

I have checked m.net for the truth on K&N filters.

Those things must be evil by the posts there.

http://forum.miata.net/vb/showthread...;26N+airfilter

http://forum.miata.net/vb/showthread...%26N+airfilter

http://mymiata.paladinmicro.com/K&NComments.htm

:)

But both (BEGi & FM ship thier kits with K&N)

somebody needs to bring a few filters to the dyno day so we can see some numbers- someone who is looking for something to change from run-to-run

hmmmmm, now i'm kinda discouraged from k&n. any other suggestions? how about the aem dryflow 21-202DK. after reading those other threads, i'm not so much worried about performance than finding a filter with a good blend of reliable and performance.

I've got an AEM Dryflow. Seems aight.

If someone brings a selection of filters that fit a 4" turbine inlet I'll swap em in. OR.... I can whip up a cheapy easy 3" setup to use em on.

OR I can build a manometer setup for my shop vac to measure pressure drop.

I've run mine with an OEM AFM and a 3" filter K&N and then the RX7 AFM with no filter...

https://www.miataturbo.net/braineack...rx7_vs_oem.jpg

lost power with the rx7 afm and no filter....

i can get you k&N CONE FILTERS for 35,with various inlets.just pm inlet size. and ill speak to my guy and see what he has.

well sure but how damaging is it to the motor to run a cotton filter like the K&N?

I have the Green brand made by K&N. I have the smallest one they make and have no complaints about it.

Miata.net fights are great. I don't pay attention to them. It seems the moderators are ALWAYS smarter than everyone else and have modified their car in the only way it should be. :jerkit:

if you're worried about damage from dust....i dunno why you're thinking about a turbo ;)

exactly.

i have a k&n drop in replacement

One has nothing to do with the other. A turbo enhances performance whereas "dust" causes engine wear without any benefits. I can see you don't have much to add to the discussion.

that's all he ever does is add to the discussion :pitlab:

[el capitan obvioso]
dust in the engine is such a small thing compared to the massive potential damage that a turbo kit can create. It's like complaining that there's a fly in your soup when you're eating dinner with an ugly fat chick.

well a turbo has a benefit and dust does not but causes ring and cylinder bore wear. A well tuned turbo setup can be very reliable.

While drunk..and its the bosses daughter.

I use a tube sock over the turbo inlet.

Are you serious? How long have you ran it like that? Any more oil burning than usual?

whats a tube sock?to google i go.

you should run a gay tube sock ...lol look at the top of the page
http://images.search.yahoo.com/searc...-8&fr2=tab-web

Hell yes i'm serious. I haven't seen anymore oil burning but I believe this to be because it was my spankin sock for 5 years. The Astroglide absorbed by the sock has been taking great care of my motor.


I have seen some cars use a nylon over the turbo inlet when drag racing.
I run a some off brand filter, nothing special, thinking i'm gonna go AEM next time around though.

no shit. But alas, I bring the best viewpoint to the table....who gives a fuck what filter you use. Pantyhose, sock, K&N, HKS, AEM, OEM....they all work. It's more important to me to have the least amount of pressure drop from a filter....so that entitles one that does sub-miata.net "standards of filteration"...what does that mean for my engine? nothing. It'll work and be just as harmful as anything else can "potentially" be.

Lex, you're worrying over nothing. I've had a K&N in every car I've ever owned and never had a single problem. The little one that Braineak posted is the one I'm currently running. The little choices like this are the ones that will end up frustrating the hell out of you and there's just no reason for it. It looks like the TDR adapter is a funky size.
Just go to ebay and search "miata maf adapter". They come in aluminum and plastic. Be sure to get the 3" one.
https://www.miataturbo.net/forums/vb...etimage&id=400

The reason Braineak was giving you shit is because the K&N "question" is one of the biggest conspiracy theories in the aftermarket. Some newb will show up and say "My buddy says K&N destroyed his engine because it let in too much dust." In the end, you're gonna let in a little more dust with just about any high performance aftermarket filter, but we're talking about micron sized particles here. We all run performance filters (as does just about every other dude on the planet who installs a filter as the first mod), none of us have problems, and no engine anywhere was ever destroyed by a K&N. Stop worrying about it, buy the 3" MAF adapter, buy the little K&N, and move on.

And Scott, you be nice... he's been corrupted and it's up to us to set him straight.;)

Lol guys, I have been running a cone filter on my turbo setup for over two years (since I had the turbo setup) and when I run my finger around the inside of the intake tubing I pick up a fine layer of dust particles.

I'm not sure if this has been the case with the OEM filter box, didn't bother to check when that was on there. It's good to hear you guys are not seeing excessive engine wear due to a cone filter.

Use on factory mazda filters.

I have handled Green brand filters and they are much nicer than K&N's in my opinion. MUCH nicer rubber molding/surround and the square panel filter (80's camaro) flows better than the K&N on my K&N display thing with the pingpong ball. But they are a decent amount more so I've never used them. Also K&N's come in almost every concieveable configuration. They were the only ones that make filters that could work with my setup.

Why would Miatas see excessive engine wear and other vehicles not? Is there a specific make and model car you know of that always see excessive engine wear when aftermarket cone filters are used? Dude, you've bought into the hype somewhere along the line. Get it out of your head!!! Aftermarket cone/drop-in filters do not harm your engine.

A stock filter might be capable of catching particles down to 3microns, and K&N's are generally rated for 5-6microns. So no, they do not filter as well... but at 6microns, who cares! The only thing to pay attention to with a K&N style filter that needs to be oiled to work properly is not to overoil it, like it says in the directions. If you do over-oil, some of it may be pulled into the intake tract and foul the MAS/MAF/intake sensor... easily cleaned but more easily avoided.

Who uses a MAF/AFM?
Get that MSPNP Sam, screw the LM1.

I'm not claiming they are harmful, just trying to gauge opinions out there and see what people have experienced. Thanks for your input, and don't worry I'm not caught up in any hype.

haha "a filter will harm your engine and make it die sooner..."

yeah, so will doubling the horsepower. I say get a dual layer foam filter and go have fun. rebuild when it breaks.

Right now i have no air filter because both filters i have don't fit
fitlers are for pussies

yeah, fuck it, be a man, don't use a filter ....:bigtu: