best air filter shape?
03-23-2003, 12:13 PM
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best air filter shape?
i'm looking at getting a new filter for my cai setup. my old filter is fubar (from bottoming out, and it's all caked up with snow/slush/dirt/salt), so what filter shape is best? just the normal cone shaped? the oval filters? or the straight ones?
03-23-2003, 08:48 PM
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If you look on my site, you'll see the ractive pod filter that I use as a ram air setup by taking off the corner lamp at the track.
03-24-2003, 06:41 PM
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Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S
I'm a personal fan of filters that allow air in through the top, and sides of the filter, vs filters that just alow air in through the sides and have a solid top cap.
In general, just about ANY "cone" or "round" filter will flow more air than your engine is capable of sucking...
In general, just about ANY "cone" or "round" filter will flow more air than your engine is capable of sucking...
03-24-2003, 07:50 PM
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03-24-2003, 09:02 PM
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I sure wouldn't want to keep that apex-i filter on for the life of the car with no maintenance!!! If it traps all that dirt (good thing)...then it's going to get clogged over time.
I would ignore the HP results and just base it off the filtration results.
Good find Shadohh!
[ March 25, 2003, 04:20 AM: Message edited by: Random ]
I would ignore the HP results and just base it off the filtration results.
Good find Shadohh!
[ March 25, 2003, 04:20 AM: Message edited by: Random ]
03-24-2003, 09:23 PM
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QUOTE
Shadohh:
Well, I think you can clean them with oil like the K&N
No. read the article. They are dry filters and are "maintenance free" for a "lifetime".
Well, I think you can clean them with oil like the K&N
03-25-2003, 01:23 AM
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I think a very important factor that no one has mentioned is how the presense of a velocity stack (built in the filter) will reduce boundry layer disturbance as your air (high velocity) enters the intake path.
If you don't know what i'm talking about, intakes with this feature have a smooth rounded inlet at the neck of the filter internally.
Familiar with the shape of a quad throttlebody setup? This is why the horns are bell shaped. Most cheap filters have a 90 degree cut inside (where the base of the filter meet the neck) and this creates turbulence at high intake velocity.
Take a look at your air filter and feel around with your finger. You'll know if it's round or not.
It looks like this Apexi unit has something like this, obviously visible on the opposite end of thef filter to help shape the flow but we aren't provided with a cross-section to observe the neck. I'd assume they implemented a velocity stack at the neck which works hand-in-hand with the top stack to get that extra hp! Amazing stuff. I like it.
[ March 25, 2003, 08:29 AM: Message edited by: Koreandude ]
If you don't know what i'm talking about, intakes with this feature have a smooth rounded inlet at the neck of the filter internally.
Familiar with the shape of a quad throttlebody setup? This is why the horns are bell shaped. Most cheap filters have a 90 degree cut inside (where the base of the filter meet the neck) and this creates turbulence at high intake velocity.
Take a look at your air filter and feel around with your finger. You'll know if it's round or not.
It looks like this Apexi unit has something like this, obviously visible on the opposite end of thef filter to help shape the flow but we aren't provided with a cross-section to observe the neck. I'd assume they implemented a velocity stack at the neck which works hand-in-hand with the top stack to get that extra hp! Amazing stuff. I like it.
[ March 25, 2003, 08:29 AM: Message edited by: Koreandude ]