Unicron

nvmys2k,

Has K&N come out with an S2000 application? If not, the Comptech air filter application is 300% better than the K&N "fabrication" application because the Comptech filter was designed for the car. As far as performance...no one has reported a dyno chart for the Comptech air filter.

Stock
The stock intake diameter is about 3 3/8 inches, the inlet is 3 1/4 inches. Stock air filter is paper and disposable. You just chunk it every 15,000 miles...the easy way out.

Comptech
The air filter adaptor inlet diameter is 3 1/4 inches. The air filter adaptor also doubles as a velocity stack (great design). The downside to the Comptech filter is that it is foam, and it is recommended to be cleaned/re-oiled every 7,000-8,000 miles (every other oil change).

K&N
K&N is my favorite air filter company. The K&N air filters are very reputable for high air flow, and the maintanence is moderate. But, I have the K&N filter in front of me right now...I didn't like the way it fits. Yes, the "RE-810" K&N outside diameter is a tad more than 3 1/4 inches, but the INLET is 2 7/8 inches. The K&N "fabrication" decreases the intake inlet diameter as compared to stock. Someone needs to design an adapter and find another K&N model other than the "RE-810".

Some very helpful person submitted this great idea to http://www.s2000fans.com about stretching the 2 7/8 inch K&N inlet to 3 inches by the use of a 3 inch cookie cutter. Great idea! But...you are still loosing 1/4 inch as compared to stock (the instructions for the 3 inch cookie cutter thingiee is below).

http://www.s2000fans.com/faqs/faq_KNinstall.php


[Edited by Unicron on 01-15-2001 at 10:12 PM]

S2K_Spain

I personally think, that if the K& N can be installed is a better option.

Just go to : http://www.martelbros.com/kn/5.htm, it seems really clear that K&N is better solution.

Also we have the dyno testing.

At the end if the installation is no so complex ( What user of K&N think about it ) K&N is the filter.

What do you think ?

STL

K&N still doesn't make a drop-in filter for the current Integra...but someone got smart and figured out how to make a universal fit well. See http://integra.vtec.net/geeser/ru3130.html . Maybe a RC-3250, RC-3320, RF-1025, or RU-2710 will work. I was going to look further into this, but I just got the JR filter instead...

Unicron

STL,

Yeah, the JR filter is my #1 pick out of the drop in filters...it's too bad I already have my comptech filter.

J R

I bought the Comptech and am comfortable with the decision. With the K&N diameter of the inlet is an issue. If you constrict the flow of air in the intake, I don't care how well the existing inlet flows, you lose some potential horsepower. The Comptech is the correct size all around and drops in without cutting, forming, bending or anything else. Doing some simple area of a circle math you would get the following:

K&N - Pi x 1.4375squared = 20.4 square inches of area
Comptech - Pi x 1.625squared = 26.1 square inches of area

The above are rough figures, but you can see that the area is more than 25% greater in the inlet of the Comptech than in the K&N. In my opinion (and yes, it is only an opinion and we all know about those) the loss of inlet cross-section has to have some impact on the breathing of the car.

By the way. Yes I am aware of the venturi effect on air flows and understand that it is also an issue.

[Edited by J R on 01-17-2001 at 08:50 AM]