From the few posts I found with a search, the Comptech foam may gain a few hp.

What fits best in a stock '97 R airbox? Also, are all OEM R airboxes the same over the years?

 

Anyone?

 

Thought I explained this . . .

RU2820 is cheapest.

Comptech is probably better but for drop in 1-2 hp is the most you will see anyway.

 

I have the 2820. Its not a direct fit, it required some dremeling and gluing and cutting up of the factory filter.
But its nice, and seems like it works better...
And...it was inexpensive!

aet

 

I have the E-2427. It works well.

 

Heh, you did Trey. Just wanted s'more feedback. I may pick up a Comptech sometime.

 

K&N 2820 = ~30.00
K&N 2427 = ~90.00
comptech = ~70.00

aet

 

Also, the Comptech has been shown in several independent dyno tests to give a 2 whp gain. I have never seen any dyno chart showing gains for the K&N.


[Modified by norice, 3:11 PM 7/25/2002]

 

[QUOTE]Also, the Comptech has been shown in several independent dyno tests to give a 2 whp gain. I have never seen any dyno chart showing gains for the K&N.
QUOTE]

I have one that shows a 1.x whp gain.

 

BUT a dynojet can show that between runs. ALthough the engine was warmer on the K&N run . . .

 

AMSoil

 

I paid $65 from summit racing for the E-2427.

 

Don't stare blind at the HP numbers. A filter should also filter out the dirt. Your engine will last longer with a good filter. Foam filters are known as good performers but bad filters. Oil filters like K&N are the best trade offs = good filtration (due to the oil) + good flow.

 

You have actual evidence for all of the above claims?

 

I'll back up DutchITR1689 on that.

You have to service the "Foam" filters more often (per the manufacturer's directions). This is because they don't filter as well as the K&N cloth filters . . .
Ther are always similar debates with Oil Filters as well.
Flow vs Filtration



[Modified by WOTTEG, 1:45 PM 7/26/2002]

 

get K&N or a cheap APC paper filter... cuz they actually FILTER out dirt!!! (K&N flows well of course)

 

I was actually looking for evidence. Making the same unsubstantiated point multiple times does not count as evidence.

 

durr... ok. do a search, dumbass.

EDIT: Here! took me a second to find this... http://www.gtrowner.com/induction.html


[Modified by csufweed, 9:17 PM 7/26/2002]

 

After cutting up my stock filter, attaching the 2820 to the filter neck and attaching the factory filter endcap to the K&N w/ screws, it fits 100% like factory. I'm very pleased w/ it.

 

Wow - would you have the courage to be that much of a jerk in real life? I suspect not. What age are you - 16?

I presume you are implying that the honda-tech archive also contains proof of your assertion? All I ever seen is the same assertion again and again. You are presumably going to tell me next that my aluminum flywheel is going to warp.

Interesting comparison - one of the only ones I have ever seen. I have no way
of judging the validy of the test, however. It looks like a non-blind single-run single-sample test with questionable assumptions. What type of dust particles did they use and do the relate in any way to the type of particles seen during typical driving conditions. Also, the foam filter they use is a disposable one. Even the page you refer to has doubts about the test.


[Modified by norice, 2:06 PM 7/26/2002]

 

Why don't you (or others) do a kind of "Great air filter test" yourself. We are also curious about the results. If you just look at the "holes" in foam filters, you'll be convinced....

 

why not? afterall...

 

BAWHHAHAHAHAHa, damnit that was some funny ****, I'm have trouble breathing here

 

Originally taken from this article (Filters are for a Supra MkIII)
http://www.mkiv.com/techarticles/fil...t/2/index.html

Which in turn was origially taken from this article (original Japanese)
http://www.mkiv.com/techarticles/fil...t/1/index.html

 

Anyone read Japanese?
http://www.mkiv.com/techarticles/fil...t/1/vacuum.jpg



[Modified by HardHead42, 11:00 PM 7/28/2002]