Check out the new Fabspeed airboxes
 

Not actual airboxes, but the covers. Anybody think these are worth the money? Looks kinda shady to me and their logic is that the opening of the stock airbox cover is too small. Anyway, here's the link:

http://www.fabspeed.com/911sc.html

later,

amir (it's toward the bottom)

They look pretty neat, but I find them to be a little too expensive.

Can someone post a picture... the website is being filtered on my end.

Curious... :)

one view
 

still thinking if this is good

the design has been done before here...and it was determined that the airflow is not really that restricted on the intake side...but rather the exhaust benefits were where the improved performance would work best.

Yeah, good idea Leland, okay there are two kinds:

first one....
http://www.fabspeed.com/911sc%20red.jpg
http://www.fabspeed.com/911sc%20lookthrough.jpg

and 2nd one......
http://www.fabspeed.com/911sc%20open%20red.jpg

k, that should work.

later,

amir

More 911 jewlrey. Should have as much go-fast value as those $200 "Carrera" sill plates.

So Leland, what happened in your carbon fiber experiments?

I drilled 1" holes in the lower (rear facing edge) of my airbox and use the K&N air filter...don't think it's possible to get much less restrictive than that. I agree...it's more eye candy than functional.

I'm with k9handler, I e-mailed Steve Weiner on this topic last year, he said just drill some 1.5" holes in the airbox cover and use your $200 for something like new torsion bars!
Apparently, there is no HP gain but it adds a deeper sound with full throttle (which I like!) - he said to work the exhaust side for any real gains.

Cheers,

I think those air boxes look HOT! I'd like one or both to switch back and forth. Im not to fond of the cosmetics of a stock CIS set up and think this would add a bit of attitude to the engine bay. I had a previous thread about drilling out an SC air box. http://forums.pelicanparts.com/porsche-911-technical-forum/78851-drilled-out-sc-air-box.html But like k9handler said "the restrictions are not in the intake of the car". The one thing that I did like about running around town without my airbox cover and only a wired down filter was the sweet sound of "SWOOOOOOH-SWOOOOOOH-SWOOOOOH" every time I stomped on the pedal.

My .02

As I stated in a post a few days back it's hard to judge just based on a picture but here goes. These items shown are not carbon. They don't sell them as carbon so their not kidding anyone but they may not look as good in real life as your mind may think they will. It looks like a process called emulsion graphics. It's the way that companies put the fake carbon on plastic parts. The carbon patterns in the picture look like they are this emulsion method and definitely like a carbon lay up. In real carbon you doon't get they countoured carbon pattern only in the emulsion graphic becuase it's a flat sheet adhered to a contoured surface. However I do like their designs and their attempt to increase breathing. Pretty cool.

Carbon Fiber Airbox
 

Hi All,

This may be a stupid question but what about getting water in the air intake? If you go driving in the rain, won't you suck a bunch of water into the air box with that open design?

Curious,
Troy

Why does the factory go to the trouble of putting a nice intake "trumpet" on the end of their air boxes?
-Chris

Anyone ever route cool air from outside the engine lid into the snorkel for a ram air effect?

Couple of things...
- why spend $$...when you can cut your own air box to result in only a "band" that holds the air filter in-place ( 3.2 style cars)? I've found that this not only gives me the same ( or more) air as drilling the box, but it greatly simplifies using the 4 attachment clips...gives more maintenance access to the right side of the engine, too. Tucked-in nice along the back of the car so water *shouldn't* be a problem.
- as to ram air, I have always thought this has little benefit, as the cooling fan brings in *so* much air...it doesn't much matter where the intake is within the engine compartment. However, someone here has posted an experiment with a 3.0 style box and a WallMart remote wire temp probe..which indicates I can be really wrong about this. Anyone remember that thread...and if it went further?
---Wil Ferch

A really nice set up would be to machine away one of the long sides of the box and add a motorcycle style oiled filter kinda of like a K&N but witha much more open and porous element. If this element were mounted at an angle (like the inherent angle once the side is machined away) then the oiled filter would shed water because of it's angular orientation but would flow air without restriction.

The idea about getting fresh, cold air in there, that's the best option. I am trying to come up with a good, fresh air solution that doesn't involve body work.

RarlyL8 did, I believe. I don't know if it has any effect. Cold air induction is used in a lot of horsepower-is-everything cases, though, so it might be worth looking into.

The 3.2 intake snorkel is for the same reason - a cooler air charge exists where the snorkel opening is than at the air filter. BA dynoed 3.2s with much the same results as Noah's.

My motorcycle has ram air, and I recall the one of motorcycle magazine performing dyno testing with fans on and off. I think there was some benefit. Then again my gray matter harddrive skips now and them. I'll have to run a search.

As for temp measurement at the snorkel, I have a thermocouple (not sure what the accuracy spec is, but good enough for this BBS I'm sure) attachment to my multimeter that I could test the snorkel temp with, but it's about 2 degrees outside right now in Illinois.

One more thought on ram air, if the exhaust is your restriction, it would be tough to really quantify the benefits of ram air until the exhaust was was opened up a bit. BUT there may be benefit nevertheless.

I did what Wil describes above.

I had a spare airbox lid for my 3.2. Since someone else had drilled this thing into oblivion (I kid you not), I figured i'd mimic what Fabspeed did.

A simple use of the coping saw to cut the wall off the lid and..... voila'!!!! I now had a crude and paltry plastic version of the Fabspeed boy-racer carbon fiber lid.

Put that sucker in and I don't know if the car was any faster (quite unlikely) but damn did it SOUND faster!!!! ;)

The increase in the intake growl was really noticeable. I found it amusing for about a day and then took it off. Felt kinda silly with it on there and I knew i'd forget and get the paper filter soaking wet when I washed the car. :rolleyes:

Sorry it's not a SC/CIS airbox story, but I think my story applies the same to the CIS airbox. $200 could be well spent elsewhere IMO. If you want more cool intake growl, you can do it for free. Better yet, locate a used airbox lid and then you'll still have the original one on hand if you decide you don't like the hacked box.

Just my 2 cents............