CORVETTE CRAZY 2

I was wondering if its worth paying the extra money

as far as perfomance goes do you think i'll get at least 1.5 to 2 RWhp

or is it best i stick to the paper filter and change it every 3K miles

every thing but the borla stingers are/is stock

Thanks in advance

jrose7004

I think it is!

ZaydeZ06

Humanoid 2.0

Paper filter, and why do you need to change it every 3k, do you drive on dirt roads all the time?

Never seen anyone report a gain when replacing the stock filter with a k&n on the dyno, over oiling can contaminate your mass air wires, and paper filters better.

CORVETTE CRAZY 2

I only do city and highway but when ever i get my oil changed

i check the filter as well and it is usually a gray shade

(bright white when new) so i figure might as well do it to

screw991le

Paper, and the 3k miles is not needed. 10k is about right. IMHO

AdamC5

3k is pretty ridiculous. Most paper filters go 10k MINIMUM. It's not unusual to go 20k+ on a paper filter.

Unless you drive through dust storms every day...3k is just a waste

Torchred62

Advance Auto store has a display where they use a Fram filter to flow air thru a tube to pick up a plastic ball. If you set up the display to allow the ball to just hover in the lower section of the tube then change out the Fram for a K&N the ball slams up to the limit. This tells you that the K&N flows a lot better even without the oil on the filter. do you have to use the oil or can you just use the K&N filter alone and clean it once in awhile? Seems the K&N would be better anyway you look at it.

Humanoid 2.0

So a floating Ping-Pong ball is a better measurement of RWHP then a dyno? The k&n filter needs oil to help trap dirt.

Humanoid 2.0

Unless you only drive 3k a year, getting your oil changed at 3k is excessive too. The DIC will indicate when a change in needed, or change it once a year.

v.vet's Z06

In considering K&N I was concerned about particle size that will be passed to the engine. I'm still on the fence about which way to go.

indy300

I can tell this is going to be an interesting thread, so I'll ask a question I've been thinking about lately. What type of filters do NASCAR and other racing series use? I bet they don't use stock paper filters do they?

PS: Before someone replies with "Nascar would go faster with a Vararam"....save it

vetred

Spend the $$ The K&N is the best, and as far as the DYNO is concerened " never shows improvment"? the dyno at K & N says different

1998 GTR

Hey Indy, don't ya' know? . . . NASCAR uses space aged technology to compress 300 hood seals down to a 1/4 inch thick "super seal" for the hood. So at 15rwhp per hood seal, that's where they get the extra 450rwhp! And hey, with all the new Clear Air Acts, who needs an air filter these days? . . . They just restrict airflow anyway!

Seriously though Torchred52, that auto supply store's K&N display is kind of a farce! K&N uses the oil to catch contaminants. Without the oil, all the fine grit stuff goes straight through! And adding oil to the filter would somewhat reduce the airflow. So the idea that, “. . . K&N flows better EVEN without the oil . . . “ is very much backwards!

Bottom line is that the K&N, properly maintained, will flow slightly better and clean better than the paper filter. But if it's not serviced properly, it will either let the fine grit into your intake, gradually eating up the pistons & rings, or it can introduce oil contamination into the intake sensors.

On a car anything close to stock, I don’t think a K&N filter will add any HP. My understanding is that the primary airflow restriction on a stock motor is more in the heads, valves, and exhaust.

But if you’re running a pumped up motor (moddified heads, cam, valves and exhaust) that needs to suck more air, then the K&N can help it breath better, thus milking out a few extra ponies. But most guys in that world go with something like a Black Wing or a Halitech (same idea as K&N, but more surface area and even more flow).

BTW – Torchred62 – Running the K&N dry is NOT an option, no matter how often you clean it, unless you like to contribute to your mechanic’s retirement fund.

1998 GTR

Performance-wise, I don't think you'll get much more out of the K&N. But IMO, if you're servicing it that often, you WILL save a bundle by going with the K&N. Instead of buying a new filter every 3k miles, you just have them clean and re-oil the K&N. Just make sure the guy cleaning and re-oiling it knows what he's doing! Or better yet, DIY. . . Which it sounds like you may be doing anyway.