The best performance modification that I have made to my Boxster-S to date!

[Boxtaboy]

Originally Posted by Johnny Danger

This was a plenum that was manufactured in Spain. It was called the "Techno Toro". Unfortunately, early dyno testing proved it to be very restrictive.

Is the horn being pushed or sucked thru for maximum airflow?

[kias@tampabay.rr.com]

It is made in the USA (California) and has a patent pending on it with stamp "Made in USA" on the die cast. The diameter of this plenum is 0.5" larger than stock plenum on each side. Go to utube and there are several dynos on the Porsches with this pelnum. You can even see how big this plenum is compare to stock. Pedro's Torque2 has identical design inside except with plastic glued to the stock pelnum. There is even patent pending on the design submitted by the IPD which is U.S. company.

[blinkwatt]

I thought Pedro's was glued and screwed?

Wouldn't it only make sense to increase the diameter of the plenum if the intakes,throttle body and air filter system were increased as well?

[gschotland]

Originally Posted by kias@tampabay.rr.com

Pedro's Torque2 has identical design inside except with plastic glued to the stock pelnum.

For 4x the bucks does the IPD deliver 4x the performance of Pedro's?

On this test of a Cayman S published in European Car, they measured:

Baseline
Peak wheel-horsepower: 260 @ 6200 rpm
Peak wheel torque: 223 lb-ft @ 4400 rpm

Maximum power gain: 13 whp @ 5900 rpm
Maximum torque gain: 13 lb-ft @ 5900 rpm

http://www.europeancarweb.com/features/epcp_0808_porsche_cayman_s_proven_power_adders/index.html

Can one feel this ~5% peak gain "seat of the pants"? Very likely. Is this going to produce dramatic real world performance improvements for a street car to justify the cost? Doubtful, but let's see some objective tests.

[blinkwatt]

Originally Posted by gschotland

On this test of a Cayman S published in European Car, they measured:

Baseline
Peak wheel-horsepower: 260 @ 6200 rpm
Peak wheel torque: 223 lb-ft @ 4400 rpm

Maximum power gain: 13 whp @ 5900 rpm
Maximum torque gain: 13 lb-ft @ 5900 rpm

http://www.europeancarweb.com/features/epcp_0808_porsche_cayman_s_proven_power_adders/index.html

Those graphs look like they were made in Excel,not on a Dynojet or Mustang dyno.

Why does it vary so much from what they claim?!
http://www.6speedonline.com/forums/boxster-cayman/83635-new-ipd-cayman-s-plenum-rss.html

They also don't list the variables;gas,,if the car's ECU was reset,other mods and such.(on the 6speedonline)

[Johnny Danger]

Originally Posted by Boxtaboy

Is the horn being pushed or sucked thru for maximum airflow?

I believe the term "ram induction" was used.

[sd_boxster]

Close. This is actually an example of AA - "abnormal aspiration"

Originally Posted by Johnny Danger

I believe the term "ram induction" was used.