slipstream444

The first test of the "data" in this comparison is to determine its validity. Two of the filters listed against the AC Delco brand have been out of production for a while, and two others have been superseded. As for the K/N: I will never support a wet gauze filter - it's a bad idea for everyday street use.

I looked up the filter listed under the Amsoil example (TS123) - out of production for almost 2 years.
The replacement filter (EA123) is a completely different design and significantly more efficient.

The AC Delco in the example is the latest version.

That's not really a legitimate comparison.

jyeung528

hmm...

should i replace the KN filter with the stock filter, but keep the K&N pipe...

Tyraid2K

where do we get an AC delco filter for our car?

driftintherain

it's because KnN is high flow air filter.... since it is a high flow filter, filters holes are bigger so they allow more air to flow through the filter. which means you are going to have more dirt flowing through the filter..

omgitsoop

"However, if a filter is using "better airflow" as their marketing tool, remember this....Does it flow better? At very high airflow volumes, probably. BUT, Our trucks CAN'T flow that much air unless super-modified, so what is the point? The stock filter will flow MORE THAN ENOUGH AIR to give you ALL THE HORSEPOWER the engine has to give"

INTJ

Old news really. I've seen this on several forums.

K+N promises how many dyno HP? Look at all of the CAI testing data for the car, one even posted a week ago. The Stock works really well.

Ubetit

This report was from 7/2004. It's not THAT old.

SenderGreen

S2000 does not have a Mass Airflow Sensor (MAF).

Jimbo

I guess I just kind of shrug when I see this data as it means nothing to me. I go by what I have personally experienced. I have used K&N filters in every car I have owned since college (1988 Accord LXi, 1993 Integra GSR, 1994 Accord EX, 2002 S2000 and 2003 WRX).

The first two never had engine issues and went well over 100K miles before I sold them. I still have the last three and all running flawlessly including the 1994 Accord with 191K miles and counting. I am pretty good about checking the air filters 3 or 4 times a year and make sure not to over oil them as that can cause MAF issues. If I had to guess, I've probably saved close to $1K in air filters and kept hundreds of disposable ones out of the dump. I'm not a tree hugger, but I do care about doing my part.

I could care less about some test when my experience speaks for itself.



Jimbo

Neutered Sputniks

So the S2000 is the only vehicle anyone here drives? I could swear my GMC truck has a MAF that would be affected...

Regardless, besides a louder intake, there is really very little to no power gains to be had by switching away from stock (as I said, some vehicles actually LOST power when running a K&N filter).