I WAS BROWSING EBAY AND I FOUND THE BOTTOM LINK,SUPPOST TO INCREASE 30 HP.INSTALL ONE HOUR.
IS THAT RIGHT?
THANK YOU IN ADVANCE
http://cgi.ebay.com/ebaymotors/Porsc...30213216QQrdZ1

 

Link isnt working... but, is it the link for that little resistor mod?

haha

 

I'm guessing it was a scam, since eBay removed the item. Was it some kind of vortex generator/electric supercharger/piece of plastic junk that goes on the intake? eBay is famous for those and they're not worth the pixels it takes to look at them.

 

Yep......I put on 10 of them.....now sittin at 715 hp

 

No, it's a real plenum.....here's a pic and info

Chris Barton








996 Turbo owners TAKE NOTICE!
This new Plenum is the ultimate inexpensive upgrade to you 996 Turbo
Air intake bench tests have shown a increase of 45.6 CFI under load!
This equals better throttle response, increase tourque, and gains upto 30 HP!!
Simple installation (about 1 hour)
If your not completely satisfied with this amazing upgrade, send it back for a COMPLETE REFUND INCLUDING SHIPPING CHARGES!

 

That's the Speed Gallery unit isn't it?

 

Company in LA called "Depart stop"

Chris

 

performance has them for $850 or so ..think alex at sharkwerks has tried one

 

any idea from shark or anyone else try it?

 

Hey Bill you sure have got the mod bug.

Neil

 

The intake plenum is made by Innovative Pro Design and sold by several different shops, including Speed Gallery. I have one on my car. Here is a photo of the stock intake plenum and the IPD unit:



On the stock intake plenum, the air stream exiting the throttle body is directed to the back end of the stock intake plenum, where it collides with the plastic wall of the plenum, before the air is forced to one of the ends of the plenum. This collision of air against the plenum wall creates turbulence and back pressure.

On IPD’s custom intake plenum, the plenum diverts the air as it flows out of the throttle body, thereby preventing a collision of air against the back end of the plenum. This diversion of the air stream reduces turbulence and back pressure, and increases air flow.

I have no comment or opinion regarding the claimed 30 hp increase, but the theory behind the unit certainly is sound. Here is a brochure regarding their test results:



Craig

 

I would think the larger throttle body is the main reason for the increase in flow/hp. I doubt there is that much air turbulence/pressure through the intake to create a 30 hp drop in power. but hey, when your chasin it every bit adds up.

 

Again, I am not vouching for the 30 hp claim. However, if you look closely at the dyno included in the brochure, the text states that it was done with a "70 mm" TB (thats the OEM size). Moreover, the brochure includes CFM testing for the intake plenum with both the OEM TB and the 76 MM TB.

Craig

 

Hmm interesting mod, wonder if its a noticeable difference!

 

I noticed a gain from the larger throttle body but as far as that piece goes, I did install it but I honestly can't tell any difference. I really should have done a before and after dyno.. On second thoughts, I really should have gotten a 6speed too