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Old 05-01-2007, 03:00 PM   #1
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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
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Old 05-01-2007, 03:04 PM   #2
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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.
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Old 05-01-2007, 03:32 PM   #3
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K&N RU-5111, small, cheap and works.
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Old 05-01-2007, 03:58 PM   #4
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what are your opinions about the filtration abilities of the K&N?
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Old 05-01-2007, 04:11 PM   #5
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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
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Old 05-01-2007, 04:24 PM   #6
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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
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Old 05-01-2007, 04:29 PM   #7
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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)
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Old 05-01-2007, 04:31 PM   #8
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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
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Old 05-01-2007, 04:40 PM   #9
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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.
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Old 05-01-2007, 04:45 PM   #10
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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.
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Old 05-01-2007, 04:50 PM   #11
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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....
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Old 05-01-2007, 05:20 PM   #12
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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.
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Old 05-01-2007, 05:49 PM   #13
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well sure but how damaging is it to the motor to run a cotton filter like the K&N?
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Old 05-01-2007, 06:21 PM   #14
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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.
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Old 05-01-2007, 06:22 PM   #15
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if you're worried about damage from dust....i dunno why you're thinking about a turbo
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Old 05-01-2007, 07:12 PM   #16
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Quote:
if you're worried about damage from dust....i dunno why you're thinking about a turbo
exactly.
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Old 05-01-2007, 07:33 PM   #17
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i have a k&n drop in replacement
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Old 05-01-2007, 07:56 PM   #18
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Quote:
Originally Posted by Braineack View Post
if you're worried about damage from dust....i dunno why you're thinking about a turbo
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.
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Old 05-01-2007, 11:18 PM   #19
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that's all he ever does is add to the discussion
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Old 05-01-2007, 11:25 PM   #20
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[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.
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Old 05-01-2007, 11:25 PM
 
 
 
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