Ram Air? Which do you have?

[PDACPA]

I want to swap out my stock air box and put in a Ram Air with a K&N cone filter.

What kind is everyone using? There is a wide variety in prices from the one here on Pelican at about $150 made by AireTeK to $375 made by Powerhaus.

[GeorgeM]

There must me someone out there that has one of these.

Do they add as much HP as the manufacturers say they do?

I've seen the plain cone filter adapters, but the RAM air units have an intake pipe that suposedly creates a venturi type effect.

They at least appear to move the filter aft, closer to the grill for cooler air.

Anybody... Bueller?

[GeorgeM]

Here's a few photos of what's available:

Pelican AireTEK

PH Ram Air

Evo AireTEK


Not sure why the Pelican and Evo are different. They're both called AireTEK. Wayne... care to clarify? Thanks.

I have the Powerhaus "Powerflow" intake. Claimed to produce up to 10 extra hp. I can't feel any difference in power. But the engine sounds better at full throttle.

[carnut169]

I have the K&N cone filter (like the 1st photo) and like Mikkel could feel no difference in power. I do like the extra space you get by eliminating the air box.

[PDACPA]

From George's picture, the Pelican looks more like just a cone filter where the other two (and one is the same brand as the Pelican) have the intake pipe and the Powerhaus has an additional box on the end of the pipe.

Seems like apples, oranges, and grapes from these three and Performance sells another type.

Anyone have any more details to shed some light?

[adamnitti]

from what i read, they do about nothing (for power). sorry. bruce anderson a-b'ed dyno results both with a filter and without anything at all, and i seem to remember there was almost no measurable difference... so if having NO air filter doesn't do much, i imagine having a cone filter setup will not do a thing.

i still plan on getting one, however, just for the sound!

[PDACPA]

I cant imagine there is no difference at all. The additional air must assist in some way. The chip/cone filter/cat bypass/muffler set up seems to be a given combo.

My brother just purchased the chips for his 951 and they said you need to have a cone filter (he had one so it was not like just a sales upgrade thing). I realize 951 is a totally different set up, but there must be some small benefit. Pelican's parts say 6-12 hp.

[Kurt B]

Search the archives for how I did mine...I cut the stock box and used it to support the cone/airbox ..otherwise, it's tough to get that thing supported properly. I have a pic of how I did it.

On whether it works. You have to do the whole thing: mufflery, cat bypass, chip, cone. After you do them all, you'll definitely notice a difference, trust me. Once again..it was a 6.3 second car when I got it. It has 50k more miles, no other engine work, and is 5.5 or 5.6 second car now.
I can only vouche for all the mods together, not any one because I didn't really test each one as I went.

[PDACPA]

That was my feeling Kurt, the whole set up as one would eventually work in concert with one another. The Powerhaus set up seems quite stable and mounts on the exisiting air box connector holes.

I saw/read your set up and was trying to preserve my OEM box. Within practicality, I have kept all my OEM parts.

The price range difference is what has me thrown for a loop. What major difference can there be???

[adamnitti]

pdacpa-

i am sure in conjunction with several other mods it helps. i was addressing that individual upgrade on its own.

[John Brandt]

I have that Powerhause (Eastover) aluminum unit and I think it's good for a couple/few ponies, or at least a bit of throttle response. Sure looks cool if nothing else...

[adamnitti]

here's the k&n version...

http://www.ajusa.com/cgi-bin/inventory/view_product?prod_id=0000000077&part_number=AJR%20110%20084

[911pcars]

"...I cant imagine there is no difference at all. The additional air must assist in some way."

If the engine doesn't produce more power/torque with a different air intake/filter, then there is no "additional" air to be had. This is an air filter (a filtercharger if you pay attention to K&N ads). However, the only way to realize additional air is push it in (i.e. supercharger or turbocharger). Increased intake noise, while it may sound nice, doesn't necessarily mean more power is generated.

Some of these air filter conversions are merely a generic K&N (or equiv.) cone filter and some PVC pipe or specially bent tubing. Ram air is an oft-quoted (overused) term. These filter setups are no where close to the concept. If you could vary the passage length between the intake valves and the throttle, you might have something.

Try removing the air filter and drive around (a dyno or even a G-Tech would be more accurate though). If you're realizing more power in this configuration, then yes, there is some intake restriction. If no, then I would suggest purchasing some other accessory to give you more driving pleasure for the buck.

Just MHO,
Sherwood Lee
http://members.rennlist.org/911pcars

[widebody911]

Here's the one I use for the track:

[PDACPA]

911Pcars - Take a look at the Powerhaus unit. There is the cone filter, the bent pipe and then a square metallic section. It is that section that I refer to that appears to be the difference between it and the competitors (probably the price difference too) and Powerhaus shows a dyno chart.

I agree some are just filters without the air box housing. However, I think the manufacturers use some sort of cycling of the air thru the connector pipe to create either an increase or "pushed" affect.

I think it will help but not sure which one to get because of the big difference in prices.

[Early_S_Man]

Some of you guys could have gotten a set of Web-Cam 20/21 cams for the amount you wasted on advertising hype and to get 'better sound!' Dyno tests have shown that some 'cones' may net you 1 or 2 hp at PEAK, but can COST you 6-13 hp at other places in the rpm range!

The limiting factor on 3.2 engines is on the EXHAUST SIDE and cam timing/lift ... not the intake manifolding or filtration! If you can't do the SSI's ... you are severely limited to gains you can count on two hands and one foot, PERIOD!! That is for ALL of your intake and non-SSI mods TOGETHER!

And, in CA, for now, and the rest of the country, later ... the 'chips' are dangerous and a waste of time with the current and future quality of gas you will be able to get!!

[John Brandt]

yeah I knew I should have kept my big mouth shut

[Rot 911]

I hear that if you put a cool collar around the cone filter you can get an additional 20hp!

My general impression is pretty close to what Warren said (promised gains not realistic), but there's one thing I don't understand: Why should I loose up to 13 hp depending on the air filter I use?

If the engine can suck in X amount of air and both the stock and aftermarket filter can deliver that why the loss? It will suck in what it needs and dump the eventual excess, right?

As I said: I feel NO difference at all in power (no loss or gain)?