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Old 07-10-2003, 08:20 PM   #1
element533
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Default air filter: K&N or amsoil?

I have a K&N, but I heard that the oil in the filter can mess with your MAF sensor. Is this true? Would an Amsoil air filter be a better solution?
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Old 07-11-2003, 09:59 AM   #2
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The K&N can mess with your MAF if you submerge it in a huge vat of oil as if you are the head cook at KFC. If you oil it according to the instructions and let it rest on some paper towels for 30 minutes you will be fine. The paper towel step is only for those that want to be EXTRA sure. For my money, a panel filter is a panel filter. I am getting a Perrin, why? No real reason, but it is cheaper than most of the others. I have heard complaints that some Amsoil filter users are reporting their element is decomposing and tearing off bits of it to be injested by the motor. No big deal really, but those few reports I saw here were enough for me to cross Amsoil off my filter list.
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Old 07-11-2003, 11:04 AM   #3
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Agreed that it doesn't really make a difference.

I went with Amsoil partly because it was lightly used at a reasonable price, partly because I like Amsoil in general.. First I've heard of this 'decomposing' thing.

Read what you can find about the subject, but don't fret on it.

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Old 07-11-2003, 04:46 PM   #4
Albert
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I too ran an Amsoil filter in my RS for a couple years, washed it twice and never noticed any decomposition
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Old 07-11-2003, 07:13 PM   #5
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in 6 years of using Amsoil TS-74 in different MAF equipped subarus ('91,'92,'93,'95,'02), I've never had a problem with MAF sensor becoming oiled or breakdown of the filter.
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Old 07-11-2003, 07:59 PM   #6
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I like K&N.


Edited to add banana

Last edited by ciper; 07-12-2003 at 01:03 AM.
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Old 07-11-2003, 11:23 PM   #7
cavymeister
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I use K&N..


IBusetheOEMpaperfilter
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Old 07-12-2003, 02:45 PM   #8
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yeah, go with the K&N...
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Old 07-12-2003, 02:59 PM   #9
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I use K&N as well, it does put an oily film on the filimant on the MAF sensor after a while, I cleaned mine recently and it was pretty evident.

I'm thinking about trying out the Perrin foam filter next time
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Old 07-12-2003, 03:28 PM   #10
Albert
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Quote:
Originally posted by PaulRex
I'm thinking about trying out the Perrin foam filter next time
Is the Perrin a dry filter? It seem very similar to the Amsoil.
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Old 07-14-2003, 12:44 PM   #11
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Default vote: amsoil

I have had 3 amsoil filters on three separate cars and never had a problem with any of them. I'm sure I'll move to a 4th with my new Sti as well. I used to run a K&N in my old honda in the early/mid 90's but had heard some things about them letting too much dirt into engines so I swapped it out.
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Old 07-14-2003, 02:06 PM   #12
element533
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Quote:
Originally posted by PaulRex
I use K&N as well, it does put an oily film on the filimant on the MAF sensor after a while, I cleaned mine recently and it was pretty evident.
You mean you cleaned your MAF sensor? Is it really delicate, do you have to be really careful?

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Old 07-14-2003, 02:34 PM   #13
Albert
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Quote:
Originally posted by element533


You mean you cleaned your MAF sensor? Is it really delicate, do you have to be really careful?

It's not that fragile, as long as you don't drop it of course

edit:
I've been using the CRC Quick Drying Electronic Cleaner
- 11oz aerosol can, I think~$4-$5 at Kragen Auto.

Last edited by Albert; 07-14-2003 at 07:34 PM.
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Old 07-14-2003, 07:14 PM   #14
mrblue48
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Well, both filters need to be oiled so it makes no difference in that regard. I went for the Amsoil because I've heard bad things about the filtering efficiency of the K&N, I by no means an expert though.
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