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 *** about filtering abilities....k&n flows more than paper, Mesh flows more than K&N style....the more flow, the less filtering.



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...



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.

 

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

 

[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.