HPS Intake Tubes

whoady4shoady · 02-07-2011, 03:08 PM

Quote:

Originally Posted by GZ3

just the pipes itself....nothing more

What filters do you guys recommend?

GZ3 · 02-07-2011, 03:09 PM

Quote:

Originally Posted by whoady4shoady

What filters do you guys recommend?

allot of guys will tell you K&N, but i personally went with AFE dry flow...much better imho

6spd · 02-07-2011, 04:15 PM

Quote:

Originally Posted by GZ3

allot of guys will tell you K&N, but i personally went with AFE dry flow...much better imho

agreed, when i get rid of these kn's, they will be AFE.

WhiskeyHotel · 02-07-2011, 04:15 PM

Yea - if you are careful, it can be done without unplugging the MAF at all.

GZ3 · 02-07-2011, 05:02 PM

I've talk to too many people, engine builders, ect...all say dry flow is the way to go

Jordo! · 02-07-2011, 05:07 PM

AEM begs to differ. This is a graph they used to have on their website. Note that the dry flow outperforms only when there is a ton of dirt on it. A clean to moderately K&N flows better.

Actually, according to AEM, K&N also outflows all the AFE filters too...

100 grams of dirt is a lot of dirt (about 1 cup!). The moral is, clean your K&N more frequently.

If this graph is no longer there, it's probably because others noticed this fine point too... can't sell filters when you clearly demonstrate it aint all that it's claimed to be.

The major advantage of the dry material, at least at this point in the tech, is no oiling. The advantage in filtration is marginal and the perfromance benefits mainly emerge when it is caked with dirt (>120 grams).

They aren't bad, but they definitely aren't better when reasonably clean.

GZ3 · 02-07-2011, 06:31 PM

1 graph proves nothing. When speaking on filters constructed in the same exact way i.e. layers, materials, a dry flow filter (brandless) will out flow an oiled filter every time. There is TONS of sceintific evidence to back this up,especially military testing that proves this. Lots of flow bench testing, and pressure drop testing. Its very easy to get confused and works in favor of K&N to talk about Oiled vs Dry becasue the construction is never consistent across the board for a true and accurate measure. Given an equal measure, dry filters out flow oiled ones everytime.

Jordo! · 02-07-2011, 07:22 PM

Quote:

Originally Posted by GZ3

1 graph proves nothing. When speaking on filters constructed in the same exact way i.e. layers, materials, a dry flow filter (brandless) will out flow an oiled filter every time. There is TONS of sceintific evidence to back this up,especially military testing that proves this. Lots of flow bench testing, and pressure drop testing. Its very easy to get confused and works in favor of K&N to talk about Oiled vs Dry becasue the construction is never consistent across the board for a true and accurate measure. Given an equal measure, dry filters out flow oiled ones everytime.

Okay... dude, use whatever makes you happy

If you have any of that data you mentioned handy, I'd be interested to see it.

You gave me the AEM sales pitch and I responded with an interesting table they used to have on their website that points to an alternate conclusion -- at least with less than 120 grams of dirt packed on the filter.

Again, that graph did not come from K&N -- it came from AEM. If it's inaccurate, blame them, but it clearly shows that their filter media is superior in flow only with 120 grams or more dirt packed on.

henry0844 · 02-07-2011, 07:29 PM

let's keep on subject fellas. we r supposed to be discussing the hps postmaf tubes. filtration by different filters is a whole other thread.

6spd · 02-07-2011, 08:38 PM

Quote:

Originally Posted by henry0844

let's keep on subject fellas. we r supposed to be discussing the hps postmaf tubes. filtration by different filters is a whole other thread.

right on. back on topic, i wish the tubes came with better clamps. the ones you get are so awkward and clumsy... and in the way... and annoying... and irritating...

Mr. Q · 02-07-2011, 09:21 PM

Just a heads up for anyone ordering the afe dry filters from amazon; they are saying part # 31-10010 fits the 370z when it clearly does not. Now I have to return two filters. The correct part number of 31-10173 comes courtesy of GZ3.

GZ3 · 02-07-2011, 09:29 PM

Quote:

Originally Posted by Jordo!

Okay... dude, use whatever makes you happy

If you have any of that data you mentioned handy, I'd be interested to see it.

You gave me the AEM sales pitch and I responded with an interesting table they used to have on their website that points to an alternate conclusion -- at least with less than 120 grams of dirt packed on the filter.

Again, that graph did not come from K&N -- it came from AEM. If it's inaccurate, blame them, but it clearly shows that their filter media is superior in flow only with 120 grams or more dirt packed on.

here are a few, some good reads simply examples of dry out performing K&N oiled...since K&N is pretty much the pinnacle of oiled filters. There Sooo many companies coming out with thier own dry filters that are beating K&N left and right...oil is gonna be phased out soon...its just old school

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

Amsoil Cold Air Induction Filters replace K&N

KLR air filter test

Foam Filter vs. Gauze Filter vs. Dry Filter - Kawasaki Teryx Forum

^ post 3 has a good you tube video

theres also a couple of youtube videos that really explain the dry vs oiled that i cant find

I have tons of SAE/ISO testing data available at my job too if you want, PM me...i dont want to jack this thread any more...sorry guys

Jordo! · 02-07-2011, 10:14 PM

^^^ thanks, dude -- I'll check them out

02-07-2011, 05:02 PM	#5 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 23	I've talk to too many people, engine builders, ect...all say dry flow is the way to go __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

02-07-2011, 05:07 PM	#6 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	AEM begs to differ. This is a graph they used to have on their website. Note that the dry flow outperforms only when there is a ton of dirt on it. A clean to moderately K&N flows better. Actually, according to AEM, K&N also outflows all the AFE filters too... 100 grams of dirt is a lot of dirt (about 1 cup!). The moral is, clean your K&N more frequently. If this graph is no longer there, it's probably because others noticed this fine point too... can't sell filters when you clearly demonstrate it aint all that it's claimed to be. The major advantage of the dry material, at least at this point in the tech, is no oiling. The advantage in filtration is marginal and the perfromance benefits mainly emerge when it is caked with dirt (>120 grams). They aren't bad, but they definitely aren't better when reasonably clean. __________________ Enjoy it. Destroy it. Last edited by Jordo!; 02-07-2011 at 05:21 PM.

02-07-2011, 06:31 PM	#7 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 23	1 graph proves nothing. When speaking on filters constructed in the same exact way i.e. layers, materials, a dry flow filter (brandless) will out flow an oiled filter every time. There is TONS of sceintific evidence to back this up,especially military testing that proves this. Lots of flow bench testing, and pressure drop testing. Its very easy to get confused and works in favor of K&N to talk about Oiled vs Dry becasue the construction is never consistent across the board for a true and accurate measure. Given an equal measure, dry filters out flow oiled ones everytime. __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

02-07-2011, 10:14 PM	#13 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 420	^^^ thanks, dude -- I'll check them out __________________ Enjoy it. Destroy it.

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02-07-2011, 04:15 PM	#4 (permalink)
WhiskeyHotel Track Member Join Date: Nov 2009 Location: Oklahoma Posts: 530 Drives: 2015 GT-R PW Premium Rep Power: 18	Yea - if you are careful, it can be done without unplugging the MAF at all.

02-07-2011, 07:29 PM	#9 (permalink)
henry0844 Base Member Join Date: Oct 2010 Location: ventura Posts: 167 Drives: 10 370 base sprt pkg Rep Power: 16	let's keep on subject fellas. we r supposed to be discussing the hps postmaf tubes. filtration by different filters is a whole other thread.

02-07-2011, 09:21 PM	#11 (permalink)
Mr. Q Enthusiast Member Join Date: Dec 2009 Location: Texas Posts: 349 Drives: 09 MB 370z Rep Power: 17	Just a heads up for anyone ordering the afe dry filters from amazon; they are saying part # 31-10010 fits the 370z when it clearly does not. Now I have to return two filters. The correct part number of 31-10173 comes courtesy of GZ3.