Very minor modifications. Other thank looks, nothing else. Air filter is the same as the 996 and you use your same MAF. I'm going to block the resonator next.

-joel

 

Sweet, something else to look for!

If you ever come across another 997 air box, PM me pls.


Cheers
Aaron

 

Saw an earlier post you made, did you need to get the 3.6L one or did the 3.8L one work too?

A

 

There is a lot more to noise than just more air. There are many examples of intakes that make lots of noise and no power. Just changing the baffling in an intake (or exhaust for that matter) can dramatically change the tone and volume of a car without improving power.

 

Now if putting a 997 airbox in a 996 increased displacement from 3.6 to 3.8 then you got something. Otherwise plenty of show, but not too much go.
Evoms, the best example.

 

I think Ubermensch is right. Rememeber when people used to take the air cleaner cover and put it back on upside down on buicks and cutlass' back in the 80's. That used to make it louder, but never increased power. I am not saying cold air intakes wont do anything on any car, just saying that louder is not necessarily faster.

 

I have the K&N and agree that the install is a bit tedious. After I got the thing in and took it for a drive I thought maybe it was both a waste of time and money because it only seemed to sound slightly different at WOT (wide open throttle) and there was no apparent power boost ( wasn't expecting any really .. hoping maybe) However, now that I've had it in for a few months, I like it! Every so often there will be that brief opportunity to punch it into an open freeway lane ..and that's when it sings. One note though.. when I had to smog my 02 C4, my intake did not have a CA regulation emissions decal ( I had purchased it (online) out of state.) so my smog guy wasn't going to pass me. Luckily I was able to call K&N and obtain a verification number for the unit and told how to go about getting a decal sent.. (pictures, install, vin etc.. pain) That being said, you may want to ask whomever you are buying from if it come with the appropriate sticker.

 

bingo

i'm curious to hear a stock box with pse though just to compare

 

I used the 3.6L 997 box. I didn't know if the 3.8 (still available at suncoast porsche for $49!) had the same TB diameter.
The standard 996 box is ugly. This one is much better. I have PSE and the sound is great (cold) I will block the resonator on the airbox next.
joel

 

looks like we have a good natured debate here. Does anyone disagree with the idea that an engine getting more air at speed is making more power? I wouldnt think so. If an engine is getting more air with an intake & all other things being equall it is making more power. Does anyone disagree with this proposition? So if the only thing one changes is an intake & as a result of this the motor screams significantly loader, can anyone reasonably say it is not producing more power? The K&N system is more than a change in the baffling of the stock system. Simply looking at the two systems will reveal this. The air path is less restrictive & so is the filter element. SO, it is allowing more air into the motor, sounds loader because of this & as such is making more power. To disagree with this demonstrates a fundamental lack of understanding of the internal combustion engine. So to coin a phrase "I'm not joking"

 

Even as a K&N owner, I think the doubt is IF the engine is actually getting any more air. We like to think so, but confirmation is impossible. So, enjoy the sound, add on the other mods and hopefully they all work together to squeeze a little more HP, TQ or improve responsiveness.

 

A lot of advanced research goes into the design of intake systems, which plays an important part in how a modern Porsche engine achieves a volumetric efficiency (VE) of more than 100% at peak torque. The first generation 996 3,4 engine for example, has a VE of 102%!

A VE of more than 100% would be impossible without using advanced techniques such as dynamic supercharging.

The text below outlines this, it originates from Hatamura Engine Reseach in japan http://www.ne.jp/asahi/hata/eng/index11e.html :

④SAE871977；In a series of the first Mazda V6 engine development, I researched dynamic supercharging of 6-cylinder intake air system. I prototyped a lot of intake air manifold, made out of pipe, by hand and then, measured and analyzed the pressure vibration of each induction system. I found that the intake air characteristic of two-degree of freedom vibration model is well approximated. Adopting the above-mentioned research result, I materialized the intake air system realizing high performance where the both inertia and resonance supercharging was utilized and the resonance effect turns to be variable. The series of activities were released in SAE paper and it is the first time that both practice and theory of the inertia + resonance induction system were released in worldwide. Subsequently, this system was adopted in a lot of 6-cylinder engine globally and became a standard system at the present day.


Anyway, my point is only that more noise does not necessarily mean more power.

 

Unfortunately you're over simplifying things and missing some important points. Let's just say that I agree that if you are able to provide more air (at the same temperature and pressure) to the engine and the computer adjusts the AFR appropriately you will make more power. I do not agree that an increase in volume or tone is any indication that you are providing more air.

 

tagging along

 

Here's one from the other thread. https://www.6speedonline.com/forums/...x-release.html