Amsoil replacement for K&N cone air filters

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Well, I'm due to clean the filter on my K&N FIPK. I was going to buy a replacement RF-1045, so that I would have two filters for the FIPK. Now, I think I'm going to order an Amsoil EaAU3590, as long as it will fit. It's a bit bigger than K&N's RF-1045. It's also quite a bit more expensive. Gotta hate that.
 
Is it really more expensive. In the long run, NO. You only need one filter, and no cleaning and oiling products. You can simply take it off and vacuum it, or blow it our with low compressed air. No waiting for it to dry or having a second filter to install while drying.
 
Well, I have just ordered one for my 4.7l Durango. I will install it as soon as I get it. I have the perferred customer rating. I will let you know how much I like it.
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Well, I have had it on now for 2+ weeks. It took the place of the cone filter that came on my CAI. It has no "holes" in it like the K&N type filter I had earlier. The truck is a tiny bit quiter so I take that to be due to the lack of holes. Truck feels great still. I will clean it after around 30,000 miles.
 
I'd like to see some more UOAs here with EaAs; I could only find one. I'd especially like to see comparison UOAs between an EaAU and an AEM dryflow.
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98, if you have the K&N part number I think you can cross reference at http://www.amsoil.com/amsoillookups/MasterFilterCrossRef.aspx or use this chart:

AMSOIL# K&N# Product Style Flange Type Base OD (in) Flange ID (in) Media Height (in) Top OD (in)
EaAU3050 RU-3570 Round Tapered Center 6.000 3.000 5.000 5.0
EaAU3051 RU-3580 Round Tapered Center 6.000 3.000 5.000 4.0
EaAU3090 RE-0810 Round Tapered Center 6.000 3.000 9.000 5.0
EaAU3555 RU-3550 Round Tapered Center 4.625 3.500 5.500 3.5
EaAU3560 RE-0950 Round Tapered Center 6.000 3.500 6.000 5.0
EaAU3570 RU-3130 Round Tapered Center 4.625 3.500 7.000 3.5
EaAU3590 RE-0920 Round Tapered Center 6.000 3.500 9.000 5.0
EaAU4075 RF-1040 Oval Tapered Center 9.000x5.750 4.000 7.500 7.0x4.5
EaAU4090 RU-0870 Round Tapered Center 6.000 4.000 9.000 5.00
EaAU4091 RC-5102 Oval Tapered Off-Set 9.500x6.750 4.000 8.938 9.0x5.5
EaAU4095 RC-4780 Round Tapered Center 6.625 4.000 9.500 5.25
EaAU4178 RC-4900 Round Tapered Center 7.375 4.125 7.875 6.625
EaAU4510 RF-1024 Oval Tapered Center 9.250x6.250 4.500 10.000 7.0x4.5
EaAU4560 RU-3480 Round Tapered Center 5.875 4.500 6.000 5.0
EaAU6065 RF-1042 Round Tapered Center 7.500 6.000 6.500 5.0
EaAU6075 RF-1041 Round Tapered Center 7.500 6.000 7.500 5.0
EaAU6080 RF-1020 Round Tapered Center 7.500 6.000 8.000 5.0
EaAU6081 RF-1044 Round Tapered Center 7.500 6.000 8.000 5.0
 
No. The EaAU filter will supply more air than the engine will demand. See page 2 at https://www.amsoil.com/lit/databulletins/g2241_rev10_06.pdf . Amsoil would not be selling these cold air intake filters if they would rob an engine of power. They will also filter smaller particles, breathe better when dirty, and hold more dirt than the K&N. Plus the Amsoil filter can be cleaned much quicker by vacuming or blowing clean whereas the K&N requires removal, washing, drying, and oiling. I see no advantage in K&N unless you prefer a red filter over blue.
 
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I thought I had read K&N was going to a similar technology.

Look how long it took synthetics to become popular, and they are still a small share of the market. It will take a long time to overtake K&N. I'll bet their R&D department is pretty busy these days!
 
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No. The EaAU filter will supply more air than the engine will demand. See page 2 at https://www.amsoil.com/lit/databulletins/g2241_rev10_06.pdf . Amsoil would not be selling these cold air intake filters if they would rob an engine of power. They will also filter smaller particles, breathe better when dirty, and hold more dirt than the K&N. Plus the Amsoil filter can be cleaned much quicker by vacuming or blowing clean whereas the K&N requires removal, washing, drying, and oiling. I see no advantage in K&N unless you prefer a red filter over blue.




Interesting graph however the flow requirements of a stock 5.0 Liter Mustang at 3000rpm and a 4.6 DOHC at 7000RPM is quite different.
 
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