Air filter shootout

[Garlic]

http://www.mkiv.com/techarticles/filters_test/1/

 

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

 

 

 

 

The foam and stainless steel mesh performed the worst.

[Zyrofillica]

thx for the info

[Chisiang]

I dunno what to say because these days any1 can be an author and put up an article on the internet to claim results.

 

This website is a translation from the Japanese magazine Rev Speed back in August 99. Rev Speed frequently takes products from manufacturers and test out. But a lot of their test aren't scientific enough and uses crude methodology most of the time.

 

In any filtration test, you need to measure lost in pressure, air flow, and not just filtration alone. Filters that allow more air to pass through will of course gather more dirt.

 

Say if in 1 cc of air there are still 1000 dirt particles even after filtration. And say for argument sake, Filter A flow rate is 100cc/sec, then there is 100,000 dirt particles after filtration. Now imagine Filter B is has similar filtration as Filter A but has a higher flow rate of 200cc/sec, then the dirt particles present should be 200,000.

 

Therefore, although both filters have similar filtration abilities, Filter B will appear more dirtier because it has higher flow rate. But should you penalise Filter B because it draws more air?

 

In addition, measuring maximum power gain is again flawed. Certain air filters are known to give early power increment while others towards the end of the RPM, and some provide good power gain throughout the power band. All these are not mentioned at all.

 

And the way dirt is poured into the air filter is not uniformed and consistent for every test.

 

Also, a typical vacuum cleaner draws air at between 2~4 BAR!

 

[Fastfatdude]

which open pod has the loudest induction noise?

[Atlantis_boi]

{reply]which open pod has the loudest induction noise? [/reply]

 

My guess is those stainless steel open pod. The larger the open pod, the louder the roar due to the increase in surface area which allows more air to be sucked into.

 

I mayb wrong.

Edited August 17, 2006 by Atlantis_boi

[Mzrmazda3]

Thanks for your info Bro Shxt I'm on Stainless Steel Drop In

[Alant]

The article mentioned the Apexi Power Intake is the same as Blitz SUS filter...both zero maintenance and lifetime use. IMHO, I thought Apexi need to be replaced at certain mileage interval?

 

Thanks.

[Diesel]

Bigger diameter pipe should induce most noise Like an empty room, the bigger the room, the more echo u get.

[Fastfatdude]

but the blitz power intake is something like the k&n? if it is, then i think there is a need for maintenance.

[Alant]

Hi, the Blitz SUS in the article is the stainless steel mesh type whereas the Apexi filter is the cotton material.

[Fastfatdude]

if its the metal mesh type, then i dont think need maintenance...or replacement..

[Lucien]

U still need to clean every 40k. It may not require oiling. It does not mean it not require cleaning.

[Fastfatdude]

how to clean? just airgun it a bit right? or wash with water?

[Abba]

http://www.mkiv.com/techarticles/filters_test/1/

 

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

 

 

 

 

The foam and stainless steel mesh performed the worst.

 

Avoid over priced Hurricane SS mesh filter

 

http://www.cmn-auto.com/products/filter.html

 

700 bht ~S$29.8

Edited January 7, 2007 by Abba