AEM Dryflow vs Amsoil EaAU for 1000 HP supra!

[alpha6164]

I currently have a K&N 9" conical air filter on my intake for the supra. However, I do not like the idea of an oiled filter. I have been reading quite a bit and had pretty much made up my mind on the AEM Dryflow with the 4" ID and 9" length, which is the largest conical 4" ID filter they make.

I didn't even know that Amsoil made the conical type filters, until just now. Which would you pick? AEM claims that they filter down to 1 micron and 99.4%. It is synthetic and looks to be easily washable. Amsoil is paper? does it need to be oiled? I know it can't be washed.

For a car that is making a 1000HP we obviously need a filter that flows well. The Amsoil EaAU4095 has 4"ID and 9.5" height which is bigger than then larges AEM makes at 9" height. AEM does not state what is the top outer diamter.

Which would you pick as far as filtration and flow and why? Amsoil seems to be $10 more expensive and that will be a non-factor in my situation.

 

[Ethan]

I think you'd be fine with either medium, obviously flow testing would supply you with a better answer since restriction is a large qualifier. Both filters from what I see would resist the wash out affect that plagues cotton filters. If Amsoil is using the Donaldson nano fiber medium, I think that is what I'd go with, but ultimately either would probably work. Additional filter protection could come from using a K&N pre-cleaner type of foam wrap-around. If you're using the AEM ecu and have done away with the hot wire air meter, then an oiled filter shouldn't be super critical.

 

[alpha6164]

Quote:

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If you're using the AEM ecu and have done away with the hot wire air meter, then an oiled filter shouldn't be super critical.

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I am using the AEM ecu so I no longer have a MAF. Is that basically the concern with the oiled filters? Just the MAF. I thought it was other things like filtration, etc.

 

[harry j]

The Amsoil EAA is a dry filter, never oil it.

Harry

 

[Pablo]

I'll let the other guys answer - due mainly to my bias. I'll just add that these are indeed nano fiber media AF's. I wish I had a ton of test data and comparisons.

Here's the data sheet....

Unfortunately I don't have one for each of my cars yet. I sure am glad Amsoil did away with the oiled foam - those were messy. Still wishing for more fitments from the regular EaA's. But these EaAU's are very popular. No customer complaints.

Also please note - whichever filter you select, there will be more "stuff" getting in via the intake tubing joints than by the filter media, especially on a turbo. How much gets by is a matter of design and workmanship and clamp selection.

 

[HondaF1Fanatic]

I would go with the Amsoil EaA if I had the option but they don't make one small enough for my application yet so I had to go with the AEM. I hope I don't mess up my engine too much by doing so but I will probably have Terry look at it to make sure.

Jon

 

[NissanFan]

For those of you looking for more data, the following links are from AEM's website, where they had the dryflow filters tested independently by SwRI in San Antonio, TX. There are 3 diff pdf files that represent 3 sets of data.

1st Fine dust
http://www.aempower.com/files/dryflow/SWRIresults_9inchdryflow_newandcleaned.pdf

 

[NissanFan]

shoot, sorry forgot to post the other two, accidently hit enter.

Coarse Dust Test
http://www.aempower.com/files/dryflow/SWRIresults_9inchdryflow_coarsedust.pdf

comparison test AEM had done on 3 of their competitors conical filters
http://www.aempower.com/files/dryflow/SWRIresults_injen5inch-kn9inch-airaid9inch.pdf

I have been considering the Brute Force system for my truck with the DryFlow filter, however Fram Boost also calls their filter DryFlow, so i'm wondering if they use AEM's filters for their intake system.

 

[nuskool]

The Amsoil filter doesn't get washed. You clean it either w/ a vacuum or low pressure air.
In street application you would be good for 100,000 miles. So for a racer I'm guessing even if you cut the life by 75% it should be good forever.