After going on the K&N Website, all you have to do is measure the stock filter element size and you can get the drop in from their vast selection of drop ins, I dont think anyone has taken the time to measure it, if you do please post the dimensions on this thread because then we can all just request that drop in size.

 

Keep in mind that if it's not a perfect fit, you can have unfiltered air seeping through the side, which would be a big problem. I wouldn't buy one if it's not made specificatically for my car and I had to have it custom made.

K&N drop in only gets you 2-3 hp. I have it on my FD and don't really notice the difference. The filtering element is very thin. I can see thru the filter if I hold it against a light, whereas I can't do that with an OEM filter. So, I don't think it'll filter as cleanly as OEM. Nevertheless, it's nice that they're reuseable.

 

it's like 14.5 by 9.5

Already tried to measure and they told me it would not be available for another 3 months


I think they want to sell the typhoon kit

 

True, the typhoon would be better if it was heat shielded, cause it has a bigger filter than the RE!! I feel that by looking at the OEM filter and the RE filter that the OEM has a bigger surface area than the RE i dont know that is my feeling, thus the OEM will allow more air to pass through

 

BUT tommy...the engine can only handle so much cfm coming in to the intake so bigger doesn't always mean better...RE intake even with smaller surface area still allows the correct maximum amount of flow though to the MAS and intake...

 

>Keep in mind that if it's not a perfect fit, you can have unfiltered air seeping through the side, which would be a big problem. I wouldn't buy one if it's not made specificatically for my car and I had to have it custom made.

I don't think it would be too much of an issue (no flames intended) but the few drop-ins I have installed have never fit as well as OEM filters. They were always slightly off...however when you clamp the OEM cover down the filter rests nice and snug.


>K&N drop in only gets you 2-3 hp. I have it on my FD and don't really notice the difference. The filtering element is very thin. I can see thru the filter if I hold it against a light, whereas I can't do that with an OEM filter. So, I don't think it'll filter as cleanly as OEM. Nevertheless, it's nice that they're reuseable.

I believe all K&N-like filters (whether they be conical, flat, donut shaped etc) use their proprietary oiled gauze filtering element. So that would mean that most afterrmarket filters would be susceptible to filtering issues. In fact with most cone shaped filters increasing the surface area, the aftermarket ones would run a higher risk of improper filtration.

 

Too much airflow and the lack of capacity to efficiently utilize it all, will cause bottle necking and air flow disturbances as XeRo has mentioned. Unless some more extensive porting was to be done on the RENESIS, it is unlikely that a substancial amount of gains will be noticed. A few ponies will still show up, but unlike that much more will show up.

 

OK, that I can understand and makes sense
thanks for the clear up

 

The filter used by K&N typhoon is a super over kill. That filter is big enough to support 1000 rwhp.

The filter we use is big enough for this NA application.

I use a smaller filter than the RX8 one on a 3rd gen single turbo and got 400 rwhp.

Chuck Huang

 

Pardon the silly question then, but why use such a large filter if it's not necesary? Wouldnt it have been better to use a smaller filter element and maybe separate it a bit more from the box to improve airflow around it?

 

Ok fair enough!!

 

Bragging rights in the parking lot.

(Disclaimer - I don't believe in K&N filters, I don't buy the vague and misleading hype that is all over their marketing material, and I don't believe that the intake and factory filter/airbox is a significant restriction on the stock engine. More specifically, you could very likely remove the stock air filter completely, ie run with no filter at all, and make the same hp on a dyno. Hard to see how any drop-in filter could make any additional power then, isn't it? All the K&N drop in would do, then, is filter less efficiently. Who needs more dirt in their engine?)

Regards,
Gordon

 

I don't why they did that. Maybe it's marketing strategy? Just look at this thread, how many people have said the bigger filter will give more HP.

Chuck Huang

 

Did you do the dyno test on taking off the filter inside the air box and see if it gives the same HP? I don't think you did, otherwise you will find out without the filter, the car makes more power.

Chuck Huang

 

I was also wondering why you decided to use a larger filter Chuck. You mention that you used a smaller filter on a much mroe powerfull 7. So why not make this one smaller as well, to allow better airflow around it? Also separating the surface from the hot engine even further?

 

You would think so...The only logical explanation i can think of is the one previously stated about the MARKETING propaganda...

I mean really....go hang out in Pep Boys or whereever for a while and take a poll..."if you were going to change the air filter element in you car/truck, which company would you go with?" you will either get a dumb, blank look or i bet the majority of the folks would answer with K&N....I do alot of offroad rig building in my limited spare time and 90% of the guys that have me work on their Jeeps and FJ's ask about a drop in K&N replacement becuase they want those extra 8-10 horses...i'm like WHAT!! are you outta your mind...8-10 from a drop in...IDIOT!!...K&N in my book...their getting a little like Bose in a way...moving away from quality and relying on their established name to carry the weight...kind of explains why they didn't research a heat shield...

 

I was asking Chuck that question because he's pointed out you didnt need such a big filter, and then basically says he coulda used a smaller one as well. I'm wondering why.

I ask this since Chuck at least doesnt have products at my local Pep boys, so marketing didnt seem like a good enough reason.

 

Has it occured to anyone here that this product has yet to be tested either on a track or dyno to see what kind of gains are to be had. All of this talk is speculation. Educated speculation but speculation none the less. Who cares if the filter is overkill as long as it puts out the power advertised. I ran stock exhaust for a while on my 450rwhp Z28. It was able to support that kind of power, but that doesn't mean that there was not power to be gained by swapping it out....I've heard that the fit and finish of this K&N piece(typhoon) is quite good and the power gains have yet to be proven so I would suggest that we not bash it until we have a foundation to do so. I will add though that no more than 2-3hp if any will be picked up with a drop-in.

 

not bashing it...speaking from past experience....although results remain to be seen...hey..I'm all about being proven wrong...

 

K&N only makes certain sizes for the 3.5" flange filter and the one I am using is the best one for this application. If you look at my intake setup, you will see there is a lot of room around the filter.

Chuck Huang

 

Green filter has a drop in filter for the stock air box. K & N is still months away from introducing their drop in filter. Their typhoon is probably a hot air sucker. For now I'm sticking with the Green Filter. I'm going to wait and see what comes out in cold air systems over the next few months.

 

got any info
price, picture, links????

 

?????????????

 

The part number is #2476. It's a new number, and it's not on the web site yet. Any internet distributor can get the part.

 

Just what is the benefit of having a green air filter?