hahahahahah

ZOmazdaOM zoom: http://japanesejapan.at.infoseek.co.jp/1990%20BNR32-4.jpg
ZOmazdaOM zoom: what the hell is that purple thing
NoToPistons: what is that
NoToPistons: dude im in the living room
ZOmazdaOM zoom: lol its not porn

but seriously any of yall know what that purple thing on the turbo is called?

is the actual name a turbo funnel or what.... what is the performance gain there besides the fact u suck up bigger shit with your turbo

lmao... i say that all the time. im always in the living room... turbo intake funnel!

dear $DIETY there's a lot of stuff in that engine compartment.

its called a velocity stack

somehow the shape/smoothless gets a little more air in than normal... supposedly

Supposedly? It's a fact, and the curvature of the end prevents (lessens) air cavitation :)

i have never owned one or researched the physics of one

hence "supposedly" :P

I use a 4" K&N heck yeah!

K&N = junk.

K&N = junk.

+ .5

.5? lol

why is k&n junk supper?

because he uses Ebay filters!

that is by far one of the ugliest engine bays I have seen in a long time.

first off find me another 4" filter. Second why is it junk?

first off find me another 4" filter. Second why is it junk?

Anything that flows air better will allow more dirt to flow better also.

I dont use any thing but paper filters (I even have one fitted to the RB intake on my miata), I just dont think that the Possibility of less filtration is worth 1/2 a HP.

Anything that flows air better will allow more dirt to flow better also.
:werd:

If you are planning on using the K&N in your Jeep C0sborne, you might as well start scheduling your first engine rebuild right now.

They might be allright for street use and limited offroad, but by their very construction they are complete and utter shit for any offroading of substance. The pores in the foam they use are far too big to trap any of the fine dust particulate you would experience in continued offroad service, especially if you encounter any kind of silt or ultra fine dust. And if you over oil to compensate for the downfall of the foam structure, you complete ruin any benefits you might have had in the first place. Oil restricts the air flow far more then the smaller pores in other filters.

That is why I run a dual stage foam filter. I prefer UNI (http://www.unifilter.com/) (though I don't think they make filters for anything other then bikes) because of their dual layer construction. One layer is very porous, equivalent to a K&N, but the other layer isn't nearly as porous so it traps the ultra fine dust.

If you don't believe me, do this:


Clean out your airbox really good, make sure it is as close to spotless as possible.
Install your K&N and go offroading
Come home, open up airbox and see how much dirt and shit is in your airbox
go back to using paper air filters or find a dual stage foam filter



edit:

and don't pull one of those "Oh, I did go offroading through the grassy field next to the interstate." Go out and find some gnarly, soft, sandy hills and rip em up. Who knows, the filter might actually be more then adequite for you, but up here in the high mountain deserts they are worthless.

^OMG! someone actually aggreed with me on that!

Everyone usually says "You put oil in it to trap all the dirt." But the fact is that the oil isnt effective for the full 30,000 miles that K&N (and other companys) says it is