sam o nela

I'll really have to search for it, but I remember reading a Product Review website and specifically a business owner that had a fleet of trucks (Silverados, I think) and converted all of them to K&N thinking that he'd be getting better gas mileage and thus less overhead....well, several of his trucks started throwing CELs when they were working perfectly fine before....

Turns out that the "brand-new-out-of-the-box" filters were probably not intended for fleet use I guess because each and every truck had a malfunctioning MAF sensor....he contacted K&N in hopes to get SOMETHING out of them, but they just would not budge and he ended up having to replace X Amount of MAF sensors and went back to paper.....he referred to it as "an expensive lesson learned". This was not the only complaint about the K&N and each story was similar....having to do with oil and poor filtration.

IIRC I actually read this BEFORE the bobistheoilguy tests were even performed (or at least before I had read them). So IF K&N filters no better than paper (which I doubt it does....I'm fairly sure that paper > K&N), and K&N can throw oil all over the place out of the box (although it seems the BIGGER contributor to this is idiots that OVER oil them after cleaning) than why go with K&N at all?

Also, I view AEM dryflow as being a step up from K&N in terms of filtration....the "new school" in reusable filters if you will.....

I've gladly used paper on my CAI over K&N, then problem is that neither K&N OR paper like to get wet....and they both take FOREVER to dry....the only difference is that if a wet K&N has lost its oil after drying, what are you left with? A gauze filtering your intake air....if you have a CAI, you already KNOW what kind of crud gets in down there....now imagine that getting through a filter that you have no idea has even been compromised....no thanks

The AEM was my personal choice because it seems to have been engineered to filter better, give more airflow, SURVIVE complete submergence in liquid, AND it can be easily rung out and cleaned....try wringing out a K&N and see what you are left with.....I did tons of research before deciding which filter to go with, and in the end it always came back to AEM being on top....

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DrDave

IamLegend:

I was referring in gemneral to air intake systems, not just the Legend. To gain more insight into this you will need to look at used oil analysis results with the various air filters. You are going to be looking for increased levels of silicon (not silicone) in the oil. Silicon is a component of sand and dirt. The oiled gauze filters allow high amounts of silicon to pass through them. The silicon is abrasive inside your motor.

Dave

sam o nela

LOL oh yeah that too....thats one thing that I've always found great about BITOG....like EVERYBODY there gets their old oil analyzed and then posts the results for everybody to pick apart and try to determine why "this was high" and "what made this get lower"

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bl420

APEXi FTMFW!!!!

Revspeed Aug 1999 Racing Air Filter Test - Sard, Apex, K&N, HKS, Blitz

click on each filter to see the results.

http://mkiv.com/techarticles/filters_test/2/

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TonyTheBullet

The drop in K&N filter was barely in my car for 2 months when I read the BITOG study on air filters. I replaced the K&N with th OEM filter right away. To be honest, I hardly noticed any difference in power or fuel economy with the K&N.

Toronto members can buy AEM dryflow cone filters from QMR Motor Sports in Woodbridge for $58.

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sam o nela

^ Ah HA!! I remember reading that one too!! Someone asked about those foam type filters on here long ago and I remembered they were the worst but I couldnt find this test!! Thanks man!! I knew I wasnt crazy!!

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<Monocolor Paint Scheme> <JDM Clear Corners> <Cleared out Rear Turn Signals>
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<Ford Taurus Cupholder Mod> <CC Tunk Light Mod> <Fut Short Throw Shifter>
<Custom CAI> <AEM Bypass Valve> <OBX Headers>
<Magnaflow High Flow Cat> <Dynomax Super Turbo Muffler>
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TonyTheBullet

This is the famous air filtration test. I love how at the end, K&N gets upset about the results to which the the author says, " They claimed that the deposit on my test filter was oil (it isn't), and then they said oil does not leave the filter and damage mass air sensors. Honestly, you can't have it both ways. Either oil leaves the filter or it doesn't. Oil will damage a mass air sensor if it gets on the sensor wiring. This is highly documented by TSBs easily available online."

Air Filtration Test

Also, as the tests show and as per K&N's own admission, the K&N filters don't filter better than paper filters. Come on, how do you expect cotton gauze to filter better than sheets of paper? Sure you suck in more air, but your engine is inhaling more dirt as well.

While you're at it, read this first hand experience of a former K&N owner as well.

Threw away K&N's due to high silicon in UOA's - Bob Is The Oil Guy

I still have my K&N's but only just in case if I need a filter in emergency or when my dryflow filter is being rejuvenated.

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ActionJackson

Are the AEM filters available for a stock intake set-up? If so, where would anyone recommend that they be bought on-line? Is the price comparable to OEM? Thanks....

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