Blue S2

See thats one thing i was wondering about as well in my GTI. I still have the stock piping coming from my bumper inlet directly to my engine. Instead of dumping the air off in the airbox, its now dumping it on my Cone. I was thinking, well damn, at speed how could it possibly be sucking hotter air? Isnt there circulation, especially if im shooting air directly at that area? I figured similar for a 944, or at least a 944 with a duct built into the headlight. I may not be seeing big gains, but then again im not really after that. (the turbo sound with the cone is much better than with stock airbox though! how could anyone resist!)

iloveporsches

Well, I way over-generalized there, I meant the ricers that throw on a "CAI" cone filter, which happens to be located right next to the engine, sometimes the exhaust manifold.

But I do have a question. If adding something so simple such as a CAI, tuned properly, can net at least 10HP on some cars, why don't they just do this at the factory? I can't see anything detrimental from this, you're simply tuning what's there to make it more efficient.

Geo

Holy cats! Have you ever heard one of these things? The one on my Sentra SE-R was louder than my aftermarket exhaust! They are bloody loud under WOT throttle. Much to loud for an OEM application.

EZRider

I would second opinions which recommended sticking with original filter box just switching to K&N element.

Mongo

ok I recall writing about this same topic back when I had the EuroSpec944 SN. Try searching. I even supplied Dyno information with the cone filter project.

Andy

Campeck

what if you did something like this?
the green is MAF
The red is custom pipe
the blue is K&N cone filter
and you cut holes in the nosepanel.
looks good and your getting cold air on an N/A
right?

Blue S2

Thats basically how an S2 works isnt it?? Instead of air coming right from a hole in the nose panel, it comes from the top radiator inlet and up through a hole in that floor? I think thats how it works.

Campeck

yeah.
but im saying you could do that setup in the N/A
and get some horspower cause it would be outside air.

BeerBurner

The na gets outside air anyway. It just gets it from the wheel well.

I heard that the wheel well is a high pressure area anyway. Is that true?

BB.

Mongo

campeck, i did something similar to that on my old 944. take a look at P-car, and believe me, it still doesn't work, you lose a lot of torque with that setup.

Andy

Campeck

yeah but yours is in the corner.
not in under the panel.
and while you drive
air would get all bunched up in there and make a little bit of pressure.
(i think)

Geo

Under the front panel isn't going to accomplish much. You'll get little resonance tuning, the air won't be much cooler, and it won't be particularly high pressure.

Mongo

the neck leading to the air flow meter can't be long since again you'll be looking at a loss for power, Perhaps custom making an intake boot that is hard piped into the nose panel with a cone there may provide better ventilation and cooler air. The question is, is anyone willing to spend $$$ for 3 more HP maximum? Anyone? Bueller????

Andy

Geo

I'm sorry, but where did you come up with that idea.

You're dead wrong.

The length of pipe is tunable and if you get it right, you flow more air through it, especially at certain rpms. What will make more power is a longer pipe that is tuned for the rpm where you want to be making power.

As Danno said, the AFM is certainly the restriction. The AFM blows goats. A MAF would rock. Unfortunately for me, the rules prevent me from changing the air metering device. But, as I said before, IMHO the adapter to the AFM is going to be critical to create better flow. Most of the adapters blow goats too.

Yeah, I know, the NA 944 guys are just afraid to spend any money to try to make power. And yes, I know, get a 951 if you really want to make some power. But the reason there is no power being made and virtually no development taking place besides that done by Jon Milledge is because nobody is willing to spend some money make more power.

The biggest reason nobody can make any power with a NA 944 is because everybody believe they can't. They live a self fulfilling prophecy.

Yabo

wow george, getting all psychological on us.
but anyway...
the reason tehy didnt do it on anything but the s2, so they could make more models of the same car with differences liek that , that poeple would go for.
my.02