| Author |
Message |
    
Nik
| | Posted on Friday, December 18, 2009 - 04:41 pm: | 
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Funny, this test makes the Uni look as bad, if not worse, than the k&n...
http://duramax-diesel.com/spicer/index.htm
I disagree.
Go to the dirt passed vs total time. The Uni did pass 13% more dirt true... But it also took 83% longer before reaching saturation. Almost twice as long for it to pass that dirt than the K&N. It also had a much higher dirt capactity at saturation than the K&N, competitive with the standard paper type filters in the same test.
If you were to service the K&N after saturation and continue running it for the same cumulative time as the Uni it would pass almost twice as much dirt.
But I don't think anyone here runs their filters until saturation before servicing, which is why a lot of those charts at face value are misleading. Serviced at regular intervals, under normal street riding conditions, an oiled foam type filter will flow and filter about the same as a paper filter, while having the benefit of being reusable. A gauze type will flow better but filter worse. |
Miami78
| | Posted on Friday, December 18, 2009 - 05:22 pm: |
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Yeah, overall it scored just slightly better than the k&n...lasted 20 minutes longer than the k&n till saturated but more restrictive on airflow.
That Wix looks pretty nice though, too bad they don't make a filter for us... |
Deanbush
| | Posted on Friday, December 18, 2009 - 11:06 pm: |
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A easy flow test can be done in your home using the return air filter for your house. Install a cheap basic filter you get maximum airflow with the least amount of filtration. Now install an expensive high filtration filter you get max filtration but the airflow is cut very dramatically, and can cause the system to starve for air. Most of the time these high filtration filters cause the "whistle effect". The filters are so restrictive and you can see the return air pull the filter membrane in and the whistling noise is caused by air being sucked around these filters.
Now I am not talking about "clean room" or medical air systems. I am just trying to demonstrate air flow restrictions. The point is "How much dust survives the ignition and burning of the air/fuel mixture". I know when I bought my Buell there were no tags or stickers warning of any allergic reactions to airborne dust. The fact remains more air flow equals less filtration period. |
Luftkoph
| | Posted on Saturday, December 19, 2009 - 01:47 pm: |
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check this out
http://www.bobistheoilguy.com/index.php?option=com _content&view=article&id=66&Itemid=76 |
Froggy
| | Posted on Saturday, December 19, 2009 - 03:00 pm: |
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I ordered my Uni today, I hope its awesome.  |
Gbaz
| | Posted on Monday, December 21, 2009 - 09:18 am: |
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I have the UNI, works fine. I have wondered about the buell pro air filter and how it compares to the K&N and uni. Any one use both or all 3? |
Fast1075
| | Posted on Monday, December 21, 2009 - 10:21 am: |
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Dunno about the XB, but the Buell Pro filter for a Blast IS a K&N...(I ran a Uni on my Blast)... |
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