Either you don't understand how a high performance filter works or your beening deliberately pertinaciuos. I've been using K&N filters since they started production and never had this problem. But then I don't drive on dirt roads either.

 

Um, they need the oil to function...it's all part and parcel of how they work. I run a K&N in the Ram Air airbox on my T/A and don't have the dusting you've found. It's my opinion that most people ignore the fact that they're supposed to use sealing grease with the panel filters.

I work for a company that makes paper for air and oil filters. We supply some of the names that have been mentioned and I run K&N filters on everything I own, my T/A, my wife's C5 and my Ninja...that's my take on them.

When I was in the service, all vehicles I came in contact with from Jeeps to main battle tanks used oil bath filters. There must be a reason for that.

Anyway, to the original poster, seal the proper K&N filter against the airbox and I'll bet it works just fine and will give you a milion miles of service with cleaning intervals of 30,000 miles....

 

Here's one for sale!! https://www.camaroz28.com/forums/sho...d.php?t=717860

 

I couldn't find a fitting K&N so I got a Fram AirHog, (identical to K&N except its orange not red).

It fits nice and snug with no leaks at all.

I read somewhere that the SS Ram air isn't effective till about 90mph. Then horsepower DOUBLES!!

 

It doesn't double, it increases with the square of the speed difference. Double the speed and it goes up 4x!

Oh wait, that's drag....never mind.

 

YAH!!! And at 120mph your 300hp motor is now putting out 900hp!!!

 

From 0-60mph the car pulls strong, then at 90mph the ram air kicks in and I can smoke the tires in 4th gear!

That would be nice.

I got my Fram Air Hog from autozone years ago when I bought the car. Clean the dirt out every few months and re-oil, I think the ram-air filters are exposed to a little more dust/dirt then a normal intake setup. Still I cant see why anyone would take out the SLP "ram air" setup for a boring "cold air intake" kit. Is there any dyno printouts to prove the difference?

I can't find my fram online but this one looks almost exactly like it.
http://www.amazon.com/FRAM-PPA7421-H...=pd_sim_auto_2

 

I've read some claims but not seen many real comparisons. However if you just look at the design of the two types, the stock SS intake airflow literally has to flow 360* to get into the intake. Most FIPK's are more direct, so they should be a little more efficient. But by how much?? Maybe 1hp??

 

360* spin is true, but then I think why would GM put a functional RamAir intake on a car, only to have NO gain at all? The SS is rated at 305HP over the 275HP stock Z28 with the only performance gains coming from the intake and exhaust. So its gotta count for something.

 

That's called "marketing"..... not technical data.

It's easy to show that the maximum "ram air" effect at 100 MPH is about a 1% increase in pressure at the opening - which would translate into a maximum 1% HP gain (3 HP on a stocker). That's with a perfectly designed opening and opening internals, which aren't present on the hood. Each "bend" in the duct eats up some of that theoretical pressure. Heat soak hurts a bit more.

Then there's the question of whether the SS hood opening is even in the path of 100MPH air when the vehicle is moving at 100MPH. Typically, the air flow detaches right after the leading edge of the hood, and leaves a stagnant zone on the surface of the hood. Why are "real" hood scoops - e.g. NHRA Pro-Stock - 12" above the hood surface, or (more recent designs) leaning forward to put the entrance closer to the leading edge of the hood, where the fast moving air has not detached itself.

 

so now GM is using mind control to make me THINK i have more horsepower..

..........first the optispark, now this. when will it end?

 

LOL..wow, don't take it so hard.

I suspect, without any hard evidence, that the Ram Air setups make about as much power as a good CAI and nothing more than that. Either should make more power than the standard convoluted and restrictive airbox.

 

so basically the answer to this question, is:

There is no answer! lol Everyone has different opinions whether theyre good or bad.

 

Hey man, what's the part number for that fram air hog?

 

I wish i knew, i just walked into autozone and told them i need a K&N for my ss ram air. they said "we dont carry the K&N but the Fram AirHog is the same thing"

That was years ago and i don't have the box anymore. maybe the part number is on the filter itself. I'll check when it stops raining.

here's a pic