The Best Bolt on Performance Upgrades for Late Model Porsches

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991 Carbon Y-Pipe
New 991 Carbon Y-Pipes
Our brand new 991 Carbon Y-Pipes are designed and engineered to deliver substantial net horsepower and torque gains across both power curves, but without the weight penalty of cast aluminum construction.
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991.2 Turbo Plenum
991.2 Turbo Plenum Raises the Performance Bar Again
IPD took delivery of its 991.2 Turbo S and the R&D started the second it arrived at its new home. The new Turbo doesn’t substantially benefit from any one particular upgrade, but the sum of its improvements deliver a superior overall Turbo compared to the already impressive 991.1 Turbo it replaces.
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IPD Carrera Plenums
IPD Carrera Plenums – Elevating Carrera Flat 6 Performance to the Next Level Since 1999
Explore the power and performance of all the IPD Carrera Plenums from 996 to 992

All IPD Plenums deliver substantial performance gains guaranteed to elevate the driving excitement of any Porsche, but the Carrera Plenums substantially improve engine power and torque across both power bands, especially in the mid-range.
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992 Carrera
992 Carrera Plenums
The Completely Reimagined 992 Carrera Plenums Available Now!!!

The 992 Carrera engine is another modern marvel from Porsche. Although displacement remains unchanged at 3.0L, there are a plethora of upgrades that elevate the 9A2 Evo engine above the previous 991.2 model. But the factory “T” air distributor remains, allowing the IPD “Y” Plenum to deliver additional net HP & TQ gains across both power bands.
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All About IPD Plenums in Under 60 Seconds
All About IPD Plenums in Under 60 Seconds
5 Most Important Facts Superior and more efficient design over the factory intake.The IPD Plenums are products of efficiency that simply improve intake air flow and increase air velocity.
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Explore the Power and Performance
Explore the Power and Performance of the IPD Turbo Plenums
All IPD Plenums deliver substantial power and torque gains guaranteed to elevate the performance of any Porsche, but the Turbo Plenums deliver an even bigger power with both stock and modified Turbos. The patented “Y” design of the IPD Plenums work exceptionally well with forced induction applications
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IPD will be featuring a constant stream of Plenum tests each month on our website. These articles will be in the form of dyno tests, track tests and competitive events. Each article will focus on specific IPD product applications as well as the other performance upgrades related to the same test.

As always, results, calculations and evaluations will be completely unbiased and never manipulated, falsified or altered. IPD prides itself on delivering ONLY truthful and honest performance claims with absolutely zero unethical misrepresentation. This would be counter productive to our business model and violate everything we stand for personally and professionally.

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Our first test article will feature a very recent dyno test performed by a dealer down under in Australia. Oddly enough we‘ll start at the beginning, this featured plenum is our oldest plenum, the 98 (in Europe) and 99 (elsewhere) Cable throttle Plenum. The 98/99 Carrera represents Porsches dive into water cooled territory. This introductory 996 model was a milestone achievement from Stuttgart but engine power was rather limited with a claimed 296 bhp.


Although the 996 is a completely different car than the previous air cooled models, Porsche continued to carry over their “T” style air distributor intake that has been employed since the 60’s. The IPD Plenum delivers substantial power gains for the 98/99 Cable cars with it’s patented “Y” design. The IPD Plenum optimizes air flow by increasing air flow velocity and reducing air flow turbulence inside the intake of the 3.4 liter engine.

Performance improvements from the IPD Cable Plenum are quite impressive, delivering around 28 HP and 26 Foot Pounds of Torque all at the wheels. As you can see, the IPD Plenum delivers max gains in the mid range where we all need it and enjoy it most. This particular test saw extraordinary gains in the torque department, far above our claimed power gains.

This particular test was performed by BWA Auto in Australia and needless to say their skepticism was soon replaced with very pleased disbelief. They reported that the car feel considerably faster and power gains were definitely noticeable by the “seat of your pants” gauge after installing the IPD Cable Plenum.

996-Cable-A_smCraig Whyms from BWA said, “At BWA Auto we make sure we provide our customers with quality products that we know work and would happily fit to our own personal cars. Which is why we are so excited about the IPD product. The theory behind the product makes sense but sometimes things get lost from the sales brochure to the real world. We decided to supply and fit the IPD plenum to suit a 1999 996 with cable throttle. After a baseline dyno test we then fitted the new plenum which wasn’t a difficult change at all, once fitted back on the dyno we noticed a decent increase on the first dyno pull and then subsequent increase in the next three dyno runs to reach the figures of a max power gain of 11.8kW at the wheels. But the most noticeable thing on the dyno sheets and on the road was in the mid range, the massive torque and mid-range power increase was fantastic to see and also feel on the road. It almost felt like a V8 with the added mid range torque improving light to mid throttle response as well as full throttle push through the mid-range. At BWA Auto we are happy to be taking on the IPD product line and distribution for IPD in Australia We will be recommending this fantastic “Bang for your Buck” bolt on modification to all our late model Porsche customers.”

If any other Aussies are looking to add some solid performance power to their late model Porsche then contact the BWA Auto team at the link on the bottom of the page.

Learn More about the 98/99 IPD Cable Plenum >>

Stay tuned for our next Plenum test. In our continued effort to deliver fresh and meaningful articles we will be posting ALL of our plenum tests, both past and present, for our viewing audience. Thank you for all your continued interest and spending time at ipdplenum.com.

BWA Auto

The IPD Plenum was the finishing touch to my 911, you felt the difference across the entire RPM range. The quality was also amazing compared to the... Read More

997.1 Carrera 4S

I installed the plenum which was extremely simple. I was not sure being I did not change the throttle body how much change I would notice. I was very... Read More

997.2 Carrera S

Nicely designed, easy to install (by Boxster standards anyway) The real proof is in driving the car!! the throttle response is totally an upgrade... Read More

986 Boxster

Great product and easy to install. More air = more horsepower

986 Boxster S

Great quality and upgrade can feel the difference!

986 Boxster

The IPD plenum made a huge difference in the performance of my 911. Air flow is less restricted, and power delivery is much smoother. I give this... Read More

991.2 Carrera 3.0L Turbo

This is the second plenum I've used in a build. Despite all the naysayers on forums, this product delivers. It IS the middle of the pipe, you need to... Read More

997.1 Carrera S

Excellent product! Fitment was superb and performance gains were apparent immediately when I stepped on the throttle. Have recommended your products... Read More

958 Cayenne Turbo

Works well with the GT3 throttle body, headers, exhaust, and tune that I had on my car. Hasn’t and never will be on a dyno but feels quicker and... Read More

987.1 Cayman/Boxster

Great product, reaction time improved nicely.

991.1 Turbo S

I observed a significant increase in both HP and Torque immediately following the fitting of the IPD Plenum and IPD Y Pipe, they were both relatively... Read More

997.2 Turbo

Great product and perfect fitment. Had some power gains, super fun to drive afterwards! I should have done this years ago. Took it on the freeway and... Read More

991.2 Carrera 3.0L Turbo

Plenum and Y-Pipe great product!

997.1 Turbo

I run IPD plenum in both my cars, easiest way to get performance gains noticeable by the seat of your pants. Easy install, instantaneous upgrade.... Read More

970 Panamera Turbo

Made a noticeable difference in mid band performance and part throttle drivability of my 2016 Cayenne turbo. I was skeptical at first but it’s... Read More

958 Cayenne Turbo

The product is must for all Porsche owners. In addition to the plenum, I have added a TB from the Carrera GT. The power is just sublime. Greg... Read More

987.1 Boxster

We have chosen to use IPD plenums on all of our Porsches. We honestly believe they increase the airflow into the engine, improving performance. We... Read More

911 Turbo, '01 911 Carrera, '05 Cayman S, '08 Cayenne Turbo S

IPD, thank you for developing a cable throttle version plenum for the 3.4l motor. I can state that this plenum does provide an immediate improvement... Read More

1999 Carrera

Stock, this twin turbocharged car's ONLY "weak" point has been its lack of the various sounds that would come along with an NA performance car... Read More

991.1 Turbo

Fantastic build quality and finish. I was hesitant at first but so glad I did it. It is one of the lower cost upgrades we can add to our car. I love... Read More

997.1 Carrera S

As one of the first new Cayman S owners ( American, living in England, USAF military) I made many modifications including an IPD plenum to the 3.4... Read More

987.1 Cayman S

Love it! Also added hi flow air box and filter. Picked up 20+ HP and a noticeable amount or low end grunt. Feels great on the track or bopping around... Read More

1999 Carrera

Have gained noticeable power due to the IPD Plenum and Y-Pipe, would recommend to anybody looking for more than what stock has to offer.

991 Turbo S

The IPD made all the other performance mods in my car come together. Wow! Transformational. The smoothness and torque through the entire rpm band is... Read More

991.2 Carrera S 3.0L

IPD products deliver the best bang for the buck performance and are a critical component of every By Design package we offer because they always... Read More

By Design

We only sell & install the parts that we utilize on our own project cars. The first port of call on any Shark Werks build is an IPD Completion Plenum!

Shark Werks

IPD Plenums and Y-pipes are a valuable part of our product line for their performance and value. Time and time again--whether it's on the dyno, the... Read More

Evolution MotorSports, Inc.

FVD Brombacher has a long tradition of offering high quality, extensively tested, easily installed tuning products that offer proven performance.... Read More

FVD Brombacher

For many years we've trusted IPD Plenums to enhance the performance of Porsche vehicles. Every time we've put them on the dyno, they've made power.... Read More

Flat 6 Motorsports

Fantastic product, excellent design and met performance expectations.

2011 Boxster Spyder

After taking stock throttle body and plenum off the Porsche and then installed the IPD plenum with new throttle body and silicone hose got more... Read More

2001 986 Boxster

I have to say I definitely feel a difference in the torque and HP after installing the competition plenum on my 911. Very quick and easy to install.... Read More

2007 Carrera S

Excellent quality and a very straightforward install! I love that this is a thick, cast piece that gives me confidence for similar resilience and... Read More

2005 Carrera

I installed the IPD Plenum and GT3 Throttle Body on my 981 Cayman. The installation was relatively straight forward and was certainly made easier by... Read More

2015 Cayman 981 Base (2.7)

"...The extra torque can definitely be felt especially when getting on it to get on the freeway. Overall I'm happy with the build quality and... Read More

2014 Panamera Turbo

Installed in my 2011 911S In addition to Carbon Air intake and upgraded Exhaust each upgrade was done separately the latest upgrade the plenum ,... Read More

2011 911S

I purchased a plenum from IPD in July 2022, the 84 mm enlarged plenum. I experienced an instant boost in horsepower accompanied by an incredible howl... Read More

2002 Porsche Carrera Coupe

Installed IPD plenum and GT3 throttle body for my 2007 911 4S. I also ordered a software Flash for my ECM. The support team with IPD were very... Read More

2007 997.1 4S

We just installed the IPD 981 GT4 Competition Plenum and factory GT3 Throttle Body on my personal GT4. The increase in torque, throttle response, and... Read More


As a company that specializes in Porsche parts, it is essential that we have first-hand experience with the products we sell and recommend to our... Read More

996 Carrera

It Completely changed my GT4. It is now very exciting to drive. Better throttle response, and the sound is fantastic! I highly recommend doing this... Read More

Cayman GT4

Super happy with the new IPD Plenum the guys over @sharkwerks installed on my 992 carrera! Car feels a lot more stronger higher up in the power ban.... Read More

2021 Carrera S

This upgrade is an easy way to gain horsepower for an affordable price!
I wish I would have done it earlier!

911 Carrera S 2008

It has been years since I purchased and installed my first IPD Plenum, in my first Panamera Turbo S. Since then, I have installed IPD Plenums in all... Read More

Panamera Turbo & Cayenne Turbo

It has been years since I purchased and installed my first IPD Plenum, in my first Panamera Turbo S. Since then, I have installed IPD Plenums in all... Read More

Cayenne Turbo & Panamera Turbo

Great product! Easy installation and a noticeably BIG improvement! I wish I would have done this sooner!

2008 911 Carrera S

Throttle response is much improved. IPD Plenum and 82mm throttle body!

2002 911 C4S