Best Air Filter

[cosmos]

Apexi Power Intake is it the best is it cleanable and is the noise much more than my TRD panel filter in standard intake box, also is there an extension pipe available to take the Apexi away from the engine heat and lower it down nearer the side air intake, is Temple tuning the best priced supplier? Thanks.

[Martin F]

to be honest mate, you won't notice any difference...

they can be cleaned but i would just buy another element myself and "yes" they do come with a pipe that takes the filter a bit closer to the side vent, sound wise then if you have a standard exhaust you may hear it .

the apexi was my filter of choice in the past

[honda_crf_04]

can you buy the extension pipes seperatley?if so where can you pick them up from?as i need one for my blitz sus.

[Steve-O 2007]

They all do the same job realy, There was a website that compaired them all but apparetnly it was a load of S**t as the guy that did it was a supplier for the filter that came in first!! It said the HKS filter was the worst at filtering yet its the biggest selling filter in japan etc, I have the HKS and its fine.

[jdbecks]

ill post some photos up of a HKS filter and the amount of crap that was behind the element, it was shocking

[Steve-O 2007]

ill post some photos up of a HKS filter and the amount of crap that was behind the element, it was shocking

But how often did you replace the element?

[Andytoyota]

Get an ARC induction box, honestly sounds like a jet engine when its spooling up!

[Martin F]

Get an ARC induction box, honestly sounds like a jet engine when its spooling up!

lol, and heres me worrying about the strange noise coming from the engine bay

it does sound quite unique

[jdbecks]

ill post some photos up of a HKS filter and the amount of crap that was behind the element, it was shocking

But how often did you replace the element?

Dunno the car had it on when I imported her from japan, she had HKS everything on her tho, but looking at the filter elements they dont look very good imo

[Bender Unit]

That Japanese filter test is such a load of BS. Any air filter in good working condition will be fine, whether it’s a £130 Apexi unit or a £15 eBay special – they will do exactly the same job.

Air filters allow the engine to breathe and stop the engine from ingesting big stuff like leaves, or heavy dust (sand / trail dust) how cleanly it filters the air is complete nonsense.

[Marf]

Get an ARC induction box, honestly sounds like a jet engine when its spooling up!

lol, and heres me worrying about the strange noise coming from the engine bay

it does sound quite unique

+1

I fitted mine a couple of weeks ago when we had that week of hot weather. It replace an exposed K&N cone filter. Apart from sounding great, the performance of the car seems less affected by hotter ambient temps outside

Definitely recommended.

[jdbecks]

That Japanese filter test is such a load of BS. Any air filter in good working condition will be fine, whether it’s a £130 Apexi unit or a £15 eBay special – they will do exactly the same job.

Air filters allow the engine to breathe and stop the engine from ingesting big stuff like leaves, or heavy dust (sand / trail dust) how cleanly it filters the air is complete nonsense.

Its terrible the amount of dust the HKS filter lets in, and you can not say its the same as the ebay special and apexi its a complety different material.. Ill go take photos of the HKS filter with all the crap its let in, and the sard ive got on now,

[Marf]

That Japanese filter test is such a load of BS. Any air filter in good working condition will be fine, whether it’s a £130 Apexi unit or a £15 eBay special – they will do exactly the same job.

Air filters allow the engine to breathe and stop the engine from ingesting big stuff like leaves, or heavy dust (sand / trail dust) how cleanly it filters the air is complete nonsense.

Its terrible the amount of dust the HKS filter lets in, and you can not say its the same as the ebay special and apexi its a complety different material.. Ill go take photos of the HKS filter with all the crap its let in, and the sard ive got on now,

I have to agree there, I'd never fit a foam filter to my car purely based on seeing how much crap they let through.

Bender Unit I'm not sure how you come to the conclusion that the filter test is a load of BS (assume you're talking about this one http://www.mkiv.com/techarticles/filters_test/2/). Seems pretty conclusive to me.

For me I'd always use a K&N, keeping it cleaned and oiled every 6000 miles.

You can get a K&N panel filter that fits the ARC airbox too, its from an RX7

[jdbecks]

just uploading photos of my HKS filter,

[jdbecks]

so far, Ive had a Apexi, power enterprises, sard and HKS filter. my fav so far is SARD, each one was on the car for about a year doing 8,000 miles, the sard one has done about 1000 miles. The Apexi and power enterprises was pretty much the same filter and kit and when I take them off I never noticed dirt / dust in the intake tract, so far its not fair to compare the sard as ive not had it on for many miles, the HKS was terrible I could not belive the amount of dirt and dust it let through, and can not belive people use them..but Im guessing its because of the name.

the apexi & power enterprises are the same material and design of filter so thats probley why they filter about the same, the Sard is different and the HKS is the most different.











about one year of being on the car, with no evidence the filter element has been replaced in that time so I can assume not.


the sard one, only decent photo I have of the element, its on the car and cba taking it off at the moment

[Marf]

Is the SARD a wet filter?

[jdbecks]

no the sard is a dry filter,

[Bender Unit]

Bender Unit I'm not sure how you come to the conclusion that the filter test is a load of BS (assume you're talking about this one http://www.mkiv.com/techarticles/filters_test/2/). Seems pretty conclusive to me.

Thing is how dirty do you think the air your engine sucks in is? You’re breathing the same stuff!

That test isn’t based on reality for the simple fact that unless you drive through clouds of thick dust on a regular basis its nonsense. The air that gets sucked into your car is clean (unless you’re driving through a dust cloud, off road dirt trail, desert) the filter is there to let the engine breathe and keep out the big and potentially damaging stuff.

So what if the inlet track is a bit dusty, genuinely what do you think its going to do? Other than be burnt up with the rest of the air as it gets sucked into the engine. Also in the posted pictures the PCV is venting right into the inlet track, coincidentally right where the heavy dirt deposits are.

It’s just something that people obsess over which is insignificant. I know my view will differ from 99% of the people on here, which is fair enough; doesn’t mean I am wrong though, I just choose to look past an internet article from an unknown source.

I ran my old engine for a few years without any filtration, it never fell apart or died, I drove it on track, on the road and also in heavy rain. It would have been used like that for many moons prior to me ever getting it.

I pulled the head off that engine as I had swapped in a different unit and stripped it; it was fine, no signs of any extra wear.

[jdbecks]

think its going to do? Other than be burnt up with the rest of the air as it gets sucked into the engine. Also in the posted pictures the PCV is venting right into the inlet track, coincidentally right where the heavy dirt deposits are.

It’s just something that people obsess over which is insignificant. I know my view will differ from 99% of the people on here, which is fair enough; doesn’t mean I am wrong though, I just choose to look past an internet article from an unknown source.

I ran my old engine for a few years without any filtration, it never fell apart or died, I drove it on track, on the road and also in heavy rain. It would have been used like that for many moons prior to me ever getting it.

the photos from my filter are not near where the PCV connects back into the intake tract, infact on my car, its not even connected to the intake tract, thats just unfiltrated dirt that the filter has not filtered.



I dont care if you run your old engine with a filter or not and had no problems thats your decision no mater how right or wrong I think it is, But from a filters job, which is to filtrate..by far the HKS is the worse filter ive ever used and thats not by some unknown source or test but from my own experience. I do not expect filters to filtrate 100% of the particals as it will not happen, however you would never see me running an engine with no filter on.

[jdbecks]

now a quote from wikipedia

Air filter
From Wikipedia, the free encyclopedia
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Used auto engine air filter, clean side
Used auto engine air filter, dirty side
Auto engine air filter clogged with dust and grimeAn air filter is a device which removes solid particulates such as dust, pollen, mold, and bacteria from the air. Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines, such as internal combustion engines, gas compressors, diving air compressors, gas turbines and others.

Some buildings, as well as aircraft and other man-made environments (e.g., satellites and space shuttles) use foam, pleated paper, or spun fiberglass filter elements. Another method uses fibers or elements with a static electric charge, which attract dust particles. The air intakes of internal combustion engines and compressors tend to use either paper, foam, or cotton filters. Oil bath filters have fallen out of favor. The technology of air intake filters of gas turbines has improved significantly in recent years, due to improvements in the aerodynamics and fluid-dynamics of the air-compressor part of the Gas Turbines.


[edit] Internal combustion air filters
The combustion air filter prevents abrasive particulate matter from entering the engine's cylinders, where it would cause mechanical wear and oil contamination.

Most fuel injected vehicles use a pleated paper filter element in the form of a flat panel. This filter is usually placed inside a plastic box connected to the throttle body with an intake tube.

Older vehicles that use carburetors or throttle body fuel injection typically use a cylindrical air filter, usually a few inches high and between 6 and 16 inches in diameter. This is positioned above the carburetor or throttle body, usually in a metal or plastic container which may incorporate ducting to provide cool and/or warm inlet air, and secured with a metal or plastic lid.