john@wickedgarage

IPD intake plenums has just assigned SpeedMerchants Motorsports as a master distributor. I wanted to bring these plenums to everyones attention (in case you haven't heard) and the horsepower gains have surprised many sceptics.

996 Carrera 3.6L 24hp and 22tq Dyno Sheet Here



996 Carrera 3.4L 25hp and 22tq Dyno Sheet Here



996 Turbo w/68mm TB 30-35 hp gain Dyno Sheet Here




996 Turbo w/74mm TB 35+ hp gain




996 GT3 24hp gain Dyno Sheet Here



PM me for individual price quotes or for more info.

We also have all the plenums up on our website. www.speedmerchants.ca

John

Optical TDI

The dyno info on the IPD website shows low RPM torque gains. I've been skeptical but they do offer a 30 day money back guarantee...tempting.

john@wickedgarage

Agreed, with a money back guarantee you cant go wrong. We were sceptical and dyno'd a car before bringing on the IPD line. As always with Speedmerchants we race and use what we sell.

http://www.flickr.com/photos/speedmerchants/5181542035/http://www.flickr.com/photos/speedmerchants/5181542035/ by http://www.flickr.com/people/speedmerchants/, on Flickr

philooo

I am surprised why don't they polish the inside ? wouldn't that be better for air flow ?

BruceP

I have one of these. I don't pay much attention to the numbers, but I will say that the difference was perceptible (which is all that really matters). Seat of the pants, the before vs. after was more noticeable than, for example, my Revo flash was.

francars

I went to your website and could not find the one for my 996 3.4L? Is this a DIY?

Ubermensch

Smoother isn't always better when it comes to making power. A little bit of disruption in the airflow promotes better mixing of the air and fuel in the cylinder.

-Shawn

CWhaley

For years the thought was to increase flow you had to polish the surface... When actual analysis proved a small amount of roughness did increase the fuel/air mixture.... The true porting job will remove the "AS CAST" surface and open up the ports improve flow by eliminating obstructions while maintaining a certain level of turbulence (fine balance here as too much will hinder flow as well).

We started doing this on motorcycles over 30 yrs ago (my father has a natural talent at the balance between smooth & rough)

nick49

Ever see smooth polished golf *****?

CWhaley

A golf ball is a great comparison...

OZ951

John, a bit OT but what octane rating was the fuel you were you using for those dyno runs?

GaryAZ

Those dyno sheet links are dead

Chris996

forget dyno how about 0-60.....

Ubermensch

Maybe 5-60 to eliminate the traction issue, but I would like to see some street/track numbers if anyone had them.

BruceP

Not really. A golf ball's engineering problem is ballistic.