K&n Air Filter Sc400

Moony400 · April 27, 2005

Hi All, New to the website. I've looked around and found nothing on K&N air filter for 1994 SC400. I purchased one from Pep Boys for $55.95 Everett, WA. Popped it in and didn't noticed any different or increase of acceleration. Has anybody else used the K&N filter or have any experience with them? Part number is 33-2054.

Thanks,

Moony400

DomLee · April 27, 2005

An intake doesn't add very much horsepower for naturally aspirated vehicles. Therefore, don't expect to necessarily "feel" any increase in horsepower.

I've added the K&N Filter for my SC300. I didn't feel any performance increase. I do, however, hear my intake a bit louder though. I believe that my RPMs seem to go up a bit quicker than before, but that is strictly perception at this point in time.

The stock plastic intake plenum isn't exactly the most efficient design in terms of performance. It usually is designed a certain way to help reduce noise. I may decide to fabricate my own intake piping...BUT...this still will not increase horsepower by a large amount.

Moony400 · April 27, 2005

Thanks for the reply DomLee. Do you think it's bettery to got something like an Injen Intake System. I saw one at http://www.lexmods.com/ProductDetail.php?C...ID=700&fid=1021 for $230. Has any body have any experience with this intake system?

Thanks,

Moony400

tg8tor · April 27, 2005

I put an Injen on my sc400..while I dont notice a difference in HP, when I step on it the sound is GREAT. Besides it looks really good when you open the hood. I got mine off ebay for $200 shipped.

:cheers:

bartkat · April 27, 2005

The only intake that I've seen that adds much power is the SRT. It comes with an add on ECU that allows the motor to take advantage of the extra air without causing a CEL.

http://www.swiftracing.com/

Dyno of the HFI system vs. Stock:

DYNORUN.001 = STOCK GS400

DYNORUN.004 = STOCK GS400 w/HFI system only

DomLee · April 28, 2005

Regarding the Injen intake system. Again, if you think that the gain in horsepower is worth the extra money ($60 for K&N versus $200+ for the Injen), that is up to you. The piping does make the air flow within the intake a bit smoother though...