HKS drop in filters
 

Hi everyone,

I have been doing research on the HKS filters how they are 3 layer design and how well they flow. I am trying collect data on how well they hold up and work on the 3.7VQ engine.

I would like to hear from people who have run them and how well they preformed. The main issue I have is are they safe? Do they let in dirt/dust that OEM or people like AFE Cosworth and K&N don't let in. I like the overall design of the HKS but need more data in them.

Thank you


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I saw a third party chart years ago comparing the flow rate and filtration of of a handful of different air filters (for an S2000) and the results were pretty much as follows: Stock filtered best but flowed worst; K&N filtered second best only to stock, but flowed very well; HKS flowed slightly better, but filtered very poorly; Apexi flowed poorly and filtered poorly; and the other 2 were honda specific companies. I wish I still had the chart because I wanted the HKS filters back in the day but strayed away after reading the results. Whether these findings hold up on the Z, IDK. Hope this helps!

Also, the difference between the filters will not be tangible because changing only the filters makes such a slight difference overall. Better safe than sorry IMHO.

:iagree: Got the same results on similar research.

Some air filters don't use multiple elements like K&N or AFE, they use a sort of nylon webbing that is densely bond together. You literally can blow through it, but they will filter nothing but large objects.

If they're the green foam HKS filters similar to the material they use on their intakes, it doesn't filter for ****.

Yeah I was afraid of that. HKS only seems to be for track and not street. How about AFE or Cosworth? I don't want K&N filters.

I've never heard a negative word about Cosworth. AEM also makes some good dry filters, but I don't know if there's a drop-in one. I've got a Blitz panel filter in my track car, and it's been fine. It's not replaceable, though.

K&N makes AEM filters.

The non-oiled ones?

k&N? makes AEM are you sure? dryflow?

Yeah, K&N owns AEM.

I head over at Club Lexus someone lost HP with AFE.

May I ask why you don't want K&N?

The S2000 guys do you know if it was old HKS or new ones.

SUPER HYBRID FILTER | INTAKE | PRODUCT | HKS This is new one.

That looks to be the same foam as the filter pods they use with their intake. I wouldn't run it if you gave it to me.

i wish R2C made drop ins for our cars.

The new HKS is the same foam type as the old.

I don't want oiled Filter that's why I don't want K&N.. Looks like I will not be getting HKS.. I don't get why people run them at all.

ive not had issues with MAF oil contamination using K&N drop ins..?

i run them because i read it had some improvements over stock when coupled with post-MAF tube. and it does allow the engine to rev smoother high.

Oiled are ok if you've very anal about how much you put on after you clean them. They often come from the factory with too much oil too.

I wanted to keep dry flow.. anyone running AFE or Cosworth?

Il be installing k&n filters later after work. Curious to see if there is any noticeable difference in anything(power, noise, throttle response)

I installed them a few years ago on my 09. The differences were slight, but still noticeable. Throttle felt about the same, sound increased slightly as revs got higher, and the car felt less choked up at high rpms. Added HPS tubes, no difference.

After that I switched to the Injen intakes, noticed a much better high rpm feeling and response, but the low end throttle suffered. It sounded ok, but just to much like that typical generic "whoosh" sound.

Switch back to all stock for a week or so before trading it in, noticed so much throttle response come back, the sound smoothed out, but the high rpms felt, in a sense, nasty.

No after driving my 13 for a week or so, I'm ready to at least throw some better filters back in. They are a nice compromise between stock and cai's. Best throttle response down low, freer feeling up high, and a nice smooth engine sound.

Moved to the right section

RE: Cosworth filters, I know from second hand accounts from a local person that they dyno tested 4hp down with cosworth over the stock paper filters.

that "whoosh" sound reminds me of flushing public urinal.

What do you mean they lost 4HP?

OMG read my mind

Uhh I mean when they put the Cosworth filters in, it dynoed 4 HP lower than with the factory Nissan filters.

:shakes head: wtf is wrong with this car

Ive never heard of a car capable of losing HP so easily as this one lol

Nothing's wrong with it, Nissan just did a pretty damn good job squeezing power out of it. They didn't leave as much on the table for us as far as modding goes.

Yeah exactly, I was just being sarcastic. It really is juiced from the factory.

;) Ok, I read that wrong.

i ran those green HKS filters for the first 10,000 miles. i never could get comfortable with the filter element. it looked so thin and weak. i went with the drop in K&N's. been good to me ever since.

The very negligible changes in power don't warrant the danger of using a poorly filtering filter in my opinion.

lol.. this is nut. I'm going to just run OEM..

I have AFE drop in filters. Not the dry filters but the oiled ones. It's really high quality.

Think it's this one

AFE-30-10173

http://ecx.images-amazon.com/images/...L._SL1500_.jpg

looks like MINS VX Filters.