Installation of a Cone Air Filter

[Zlatko]

Hey, i decided to rip out that ****ty restrictive air box..and go with a nice cone filter.

There's a problem however..

There is one main air intake that goes into the MAF...and there is a second hose..that appears to be going somewhere under...looks like valve cover for the timign belt or something..doesnt matter..

Anyways..what can i do about this? The custom bracket for the cone filter doesnt have a hole for that second line...

[JRMock]

The second line is not required. For some reason the early cars have this hose between the timing cover and the air box.

Find one of your wife's lawn chairs, and take the rubber 'foot' off one of the legs, and use it to cover up the hole on the timing cover. Be sure to fasten it with a nice hose clamp. This is not an area you want to be droping things into.

FWIW...the cone filters look nice, but they will be sucking hot air all the time...the stock box is ported to the fender, which draws air form outside the engine compartment.

Good Luck
JM

[Sabyre]

IMHO The stock air box has a nice large air resivour and pulls more cold air than a cone setup. I would keep the air box and use OEM filter elements.

I have seen many posts about this subject and if you do a search you can see the same. Many of the people that have done this type of conversion went back to stock.

[scrambled2k3]

The hose coming off the front cover of your timing belt and attaches to your Air Intake Box, was designed to keep the belts cool with the air being pushed into their. It was later recalled (i believe) because moisture was getting into there and onto the belts. Just cap it off good, i did the exact same when i installed a cone filter.

[MrPants]

if you are doing this for looks, got for it. but there have been numerous discussions about why you wont see any performance increase
here is a good example

[Porsche-O-Phile]

In most cases, the best 944 is a stock 944. . .

I don't mean to sound harsh here, but here's my $0.02:

Very few mods I've seen make sense for these cars, when you think about them. I personally hate the fact that people get suckered in by the marketing of cheap-a$$ aftermarket junk that convinces people that they can slap something onto their car and all of a sudden have a bad-a$$ hotrod (the "Welcome to Pep Boys" mentality). Maybe it's OCCASIONALLY appropriate for a ricer or "hipo-ed" old Chevy Nova, but not a Porsche. Don't get me wrong - K&N is a good product for an old 350 or Ford V8 or something (where ANYTHING is better than stock), but I just don't see the logic on a car as well-engineered as these. You get an ample supply of cold, well-filtered air with the stock setup. There's NOTHING wrong with it. Save your $100 and go get some gas, go for a long drive somewhere, and enjoy owning one of the best made cars ever built.

If you want K&N, get the K&N replacement that fits the stock air box, although in my experience the stock ones are pretty good.

[Sabyre]

Careful with the flat type K&N. Over oiling can cause big problems.

[Zlatko]

Originally posted by Porsche-O-Phile
In most cases, the best 944 is a stock 944. . .

I don't mean to sound harsh here, but here's my $0.02:

Very few mods I've seen make sense for these cars, when you think about them. I personally hate the fact that people get suckered in by the marketing of cheap-a$$ aftermarket junk that convinces people that they can slap something onto their car and all of a sudden have a bad-a$$ hotrod (the "Welcome to Pep Boys" mentality). Maybe it's OCCASIONALLY appropriate for a ricer or "hipo-ed" old Chevy Nova, but not a Porsche. Don't get me wrong - K&N is a good product for an old 350 or Ford V8 or something (where ANYTHING is better than stock), but I just don't see the logic on a car as well-engineered as these . You get an ample supply of cold, well-filtered air with the stock setup. There's NOTHING wrong with it. Save your $100 and go get some gas, go for a long drive somewhere, and enjoy owning one of the best made cars ever built.

If you want K&N, get the K&N replacement that fits the stock air box, although in my experience the stock ones are pretty good.

Note the bolded part please..

It goes from the fender...into the airbox...goes through the filter..into the maf...makes a 90 degree turn into a crooked intake.

That is NOT well engineered. So please stop saying that.

If it were up to me, id take off the MAF, and make a cold air intake from the front of the car running straight into the intake...if that's possible..as it's crooked naturally.

[Britwrench]

Yet again Mr. Zlatko, you come up with unsubstantiated statements. Please send your resume to Porsche AG, I'm sure they need you. Go and have a look at most other modern vehicles and look at the intake manifolds. The system on the 944 works and works well.

Unless you are dramatically inproving the power output of the engine the cone air filter is not necessary. Most intake systems rely on the "air box' system where a large volume of still. cold air is available to be drawn in. Nearly all Japanese large capacity motorcycles use this principle. The stock 944 draws cold air in from the left side fender well and into the air filter assembly.
You want to draw in under-hood hot air?

Your money.

[scottmandue]

Originally posted by Zlatko
snip...

That is NOT well engineered. So please stop saying that.

If it were up to me, id take off the MAF, and make a cold air intake from the front of the car running straight into the intake...if that's possible..as it's crooked naturally.

I honestly don't understand why a few people who post here keep on with the "poorly engineered piece of junk" track.
I will keep saying -"if you hate this car so much sell it and buy something else"
I'm not trying to be a smarta$$ here, there are allot of nice cars available in the same price range, BMW 3 series, RX7, Nissan Z-cars, 510's, or even an old camero or mustang to name a few.

[Porsche-O-Phile]

Geez, this is getting heated (kind of like the intake air with a cone system)!!!



All I was trying to say is the more I learn about these cars, the more I understand how well they really are engineered, designed, and put together. I'm nothing but continually impressed by what I see. I have to take exception to the implication that these cars aren't well engineered - they most certainly are.

The air flowing 90 degrees on its way to the intake might not be all that bad aerodynamically, it depends on a lot of factors including pressure, laminar versus turbulent flow, and other considerations that I really wouldn't be suprised if the Porsche people analyzed in extensive detail. It might even be that the 90 degree bend functions as a built-in natural "backing up" point for air so that when you accelerate hard, there is a mass of air sitting right there ready to be used and there's no engine hesitation - which actually WOULD help performance in that particular instance. I've seen a similar setup in a Lycoming aircraft engine - engineers really do think of these things.

I'm not saying it's the best system on earth under ALL circumstances (there isn't any such thing). In any project (including engineering a car) there are compromises - available space, desired performance under particular conditions, cost, ease of maintenance, etc. . .

Look, if the K&N makes you happy, go for it, but don't expect it to gain you much, if anything. In fact, I wouldn't be suprised if you actually LOST power from that setup.

[Taz's Master]

In my 240sx I used pvc pipe and made an extension to move the K&N into the fender to get cold air. It was simple, and required a screw driver and a dremel tool. PVC pipe can be heated and bent if it is needed and there are many different sizes of black rubber reducers to connect to the MAF with hose clamps. The engine compartement may not seem like the most tasteful place to display plumbing fittings, but with a can of black spray paint, and a little planning and paitence you can do a good job and not suck hot air.

[bryanthompson]

I'd just like to point out that almost all of Zlatko's threads turn into a flame war.

Zlat: how do i do {Insert mod here}

Everyone else: better to leave it stock

Zlat: I'm smarter than porsche, i just can't figure out how to put a cone on

Eveyone else: We told you, it's not worth it. Quit *****ing about the 'poorly designed' car and buy a honda or mazda.

[ronin]

Originally posted by Sabyre
Careful with the flat type K&N. Over oiling can cause big problems.

and those problems would be..?

[Sabyre]

MAF can become contaminated with oil and not function properly. Can cause the car to run like crap.

[ae1969]

... uhmm the stock NA does not use a MAF or MAP (in case someone brings that up).... It uses a barn door to measure air flow (AFM).

No hot wire to contaminate but I agree with your point Sabyre. The wires do wear out on MAF setups.....whether its the oil or not would be a good long term study....

.... Not much to be gained by a cold air intake in this car. You will get a throatier throttle sound...... The NA sucks a good amount of air through the box it has and unless you went to a MAF system that allowed you to adjust for a little more fuel to go with this denser air...... uhmm waste of money.

But it does sound nice...... IMO

[UconnTim97]

Originally posted by Taz's Master
In my 240sx I used pvc pipe and made an extension to move the K&N into the fender to get cold air. It was simple, and required a screw driver and a dremel tool. PVC pipe can be heated and bent if it is needed and there are many different sizes of black rubber reducers to connect to the MAF with hose clamps. The engine compartement may not seem like the most tasteful place to display plumbing fittings, but with a can of black spray paint, and a little planning and paitence you can do a good job and not suck hot air.

I know AEM makes cold air intakes like you are talking about. I don't think they make one for the 944.

[ilikemy944]

The head on the 944 n/a flows 180cfm. Something tells me the filter has no problem with that amount...

[Zlatko]

What a bunch of bull****..

Why do you people take this so personally?

It's a ****ing car.

It's not a fast car. It has bad acceleration..low power output..and the only thing it has going for it is the handling...

Some people want more..im one of those people. Back off.

As i said, the intake is a TERRIBLE design. Ive never seen such a monstrosity. Im going to have to customize the whole intake to improve power output..

[Britwrench]

If it's that bad, why did you buy it? As for the "monstrosity" of an intake manifold, go and look at many other contempary cars. Yep, 944s are not the world's fastest accelerating cars, so what? Many people want more power, that's what the 944S2 and 944Turbo is for.