I decided to go with the stock air intake and see how that flys with me. Kind of getting sick of the noise my Frankencar/Apexi filter intake makes and starting to miss my low end alot. The lag is really bad especially when you have an auto.

I was doing a bit of research and found 2 drop in panel filters that I could use. The K&N and a HKS. If there are others, let me know. The K&N I've seen used all over the place so there is no question with that one. I'm wondering who on the Org has used or is currently using a filter made by HKS. They seem to be constructed of foam so I don't think they need to be oiled, which I kinda like. Are they a "life time" filter like the K&N's? Opinions on the filters would help me out.

Maybe since I'm going to be using the stock box, I should just use a fram cause it won't make a diff now?

This is sooo true. I did the same, and the went back to a POP w/ stock resonoator...But then again I change intake set-ups on both my Maximas like I change my own udnewear ..

I'd stick with K&N.

How does the stock/pop setup feel? Big diff? Or you just did it cause you were itching to put heavy tools on your engine bay?

I'd try either the kool blue or the fram air hog. The cool blue filters better than the k&n and flows at least as good, probably better. I'm also going back to stock box and will be getting a $5 paper filter from napa. There is no filter in the world that is worth more than $20 for 2 extra hp and poorer filtering than a paper filter.

Both the kool blue and the air hog seem to need oiling, at least from what I've researched just now. Maybe I'll just say ef it and go with the paper filter too. I just don't like the fact that there is oil, right where the engine gets it's air from. Granted people have used oiled filters for many many yrs without a problem. I still don't like the idea. Maybe I'll try the HKS panel filter for the hell of it. Then come back here and cry when the foam element breaks off and gets sucked into my engine and hurt things.

I do the paper element filter as well whenever going back to stock.

the oil is there so dirt and debre doesnt get through.

so it makes it re-useable by just cleaning and re-oiling it.

meaning a paper = replace, oil = re-oil and reuse.

is their much differnce in performance? i would guess that some are enginereaed for better airflow... the oil based ones usually dont let anything through, so they may let cleaner air pass through.

i dunno... i kinda want to replace my stillin hi-flow intake, BUT i also just want to mod it so i have the ram air directly into the filter and make my own little box for it, also make a heat shield so the hot air doesnt get into it.

foam is for better flow, but they get clogged and flow nothing after a while. I like the K&N for the no changing option. I know its more expensive, and then you have to buy the re-oiling kit... So its probably more expensive in the long run also. Paper is lame to me, but its all up to what you want, they all get the job done. and the flow of a filter can only vary so much when they are the same size.

I used the drop in K&N and it let some particles into my intake. Needless to say I had to buy a new MAF Sensor. Good Luck with whatever you choose.

You prorbably used too much oil

Not probably, he did use too much oil.

Did some research, try Pro dry S filter from AFE, around $40. NEVER REPLACE, no oil, flows better than stock, no huge gains, but 1-2 hp and a little better throttle response plus the site says usually 1-2 mps inprovement and smotther acceleration throughout the powerband
My .02$

hey dude, welcome to the forum. Bumping two year old thread is unnecessary. Although good input.

Not research....

Bumping threads show people are SEARCHING !! How can you please it sheez..

I have the stock intake and think it's well designed. However it doesn't seem one piece so the velocity and actual intaking might be hampered compared to those intake system.

As far as filter is concerned?

Have you guys checked your Throttle Body and what not? I believe oiled filters leads to:
excessive/insufficient oiling. It's difficult and reusing something like a FILTER is pathetic. No matter what they advertise, I'd feel much better buying and changing the AIR FILTER.

THE HKS doesn't even seem like a filter. If your alright pulling in crap, then so be it. I've been using paper air filter of all sorts and haven't had any problem. If your ****, then use AMSOIL AIR FILTER.

I went back to stock as well. Got sick of the hissing faucet noise at idle, especially in drive thru's lol.

http://www.bobistheoilguy.com/airfilter/airtest1.htm



basically saying the OEM nissan airfilter beats all other air filters, including K&N, fram, etc.

OEM over After market.. I like my Low end torque

i'm tempted to go back to stock too. What sucks is, I just bought a gallon of k&n filter oil. Anybody want some oil?
Dr J

How much are you selling that oil for?

stock oem ftw. no questions with it at least

I have the cone filter and I feel it lag also. Why does it lag if the engine is getting more air?

sense were on the topic of stock airbox i have a hacked stock box and a K&N panel filter up for grabs if anyone wants to revert back to stock pm me.

The air box has a "reservoir" on top of the filter where filtered air is able to reside and be utilized immediately (ex. from a stop). The engine has to filter air every time with a cone filter, resulting in lag.

I went back to stock for a week and put my cone filter back in..

Thats a myth and its not just the initial throttle slap because if it were true then it would not effect the rest of the rev range as far as tq is concerned. Theres not really much to complain about anyway. Personally i prefer my frankencar just for the pure fact that the TQ lost down low makes it easier to get a consistant launch that doesnt spin hard out of the hole on street tires.