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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > specs on the k&n from Logic HVI anyone?



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      04-11-2008, 09:42 AM   #1
imaznumkay
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specs on the k&n from Logic HVI anyone?

I'm thinking about replacing the filter on the HVI (when i get to it) with one of those HKS mushroom filters and i need the specs on the k&n filter that comes with the HVI.

heres what i need:
- inlet size
- element diameter


inputs are appreciated! thanks
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      04-11-2008, 10:21 AM   #2
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I think I have a HKS mushroom filter in the garage somewhere. If I find it, I'll let you know if it will for it not.
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      04-11-2008, 10:44 AM   #3
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Quote:
Originally Posted by Amir87 View Post
I think I have a HKS mushroom filter in the garage somewhere. If I find it, I'll let you know if it will for it not.
tight! let me know whats good
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      04-11-2008, 10:49 AM   #4
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I have an HKS mushroom filter as well. Are they noticably better/worse than K&N filters?
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      04-11-2008, 10:58 AM   #5
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Wish I could read Japanese....

http://www.mkiv.com/techarticles/filters_test/1/
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      04-11-2008, 11:00 AM   #6
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But just from the looks of it... the HKS and K&N are somewhat similiar in HP increase... but HKS lets a hell of a lot more dirt. Apex filter looks to be the winner in this test: More HP and Cleanest.
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      04-11-2008, 11:50 AM   #7
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I use to have one one my evo. The filters get very expensive. Like $25 each. And you can totaly tell when they get dirty.

I droped in a new filter every 3 months. And I tell you when you get a new filter in there, the throttle response and power increase is very noticable.

I just chucked about 10 old filters or I could have given you a size,, before they form into a 1/3 circle.

Just as a guess I think the filter is 12" diameter. Folded in the hks housing I would guess 10" diameter.
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      04-11-2008, 11:59 AM   #8
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Just take off the filter and put a tube sock over the inlet pipe...should work
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      04-11-2008, 02:03 PM   #9
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Quote:
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Just take off the filter and put a tube sock over the inlet pipe...should work
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      04-12-2008, 12:42 PM   #10
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Check the AEM dri-flo filters out
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