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Discussion Starter #1 (Edited)
IPD 82mm competition Plenum with the 82mm Throttle body for both 987.1 and 987.2 Cayman and Boxsters
Combination Special:
987.1 IPD 82mm plenum and throttle body - $995 with FREE shipping and NO sales tax
987.2 IPD 82mm plenum and throttle body - $1,195 with FREE shipping and NO sales tax
Use promo code: P9SAVESIPD

IPD Porsche Plenums

The revolutionary and patented design of the IPD Porsche Plenums improve intake air flow by replacing the factory plastic "T" style design with a more efficient, cast aluminum "Y" design. The IPD Plenums distribute the air flow more effectively by using a true merge collector and reducing pressure drop at the throttle body inlet. This innovative “Y” diversion area of the IPD Plenums split and channel intake air flow reducing air flow turbulence and increasing air flow velocity. This superior and proven design ultimately results in considerably power gains throughout the horsepower and torque curves.
Bottom line, the "Y" design delivers increased power and drivability. The patented "Y" design Plenum offers a lower pressure drop across the merge collector than a conventional/mass production "T" air distributor. Any pressure drop in the intake tract will serve to either back pressure the turbocharger in a forced induction application or to choke intake flow in a naturally aspirated engine. Both scenarios limit the performance potential of the engine.
IPD Plenums have earned the reputation of being the single best “bolt on” performance upgrade you can possibly install on a late model Porsche. The IPD Plenums provide the best power per dollar return in the Porsche after-market industry today. They have been tested, challenged and proven over and over again to deliver the power gains IPD claims.
Every IPD Plenum in our product line goes through a very rigorous and scientific R & D program backed with extensive dyno testing and tuning to deliver the maximum engine output possible. The countless hours we invest testing and tuning each Plenum design, ensures you are getting the highest quality and best performing Porsche performance product on the market.
 

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Father's Day Special: Buy IPD plenum and Throttle body and get a FREE BMC Filter. PM and let us know how we can help you.
I have cayman R just order evmos air filter and fvd sport catback exhaust, did the IPD will give me more power and more breathing for the engine
 

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I have cayman R just order evmos air filter and fvd sport catback exhaust, did the IPD will give me more power and more breathing for the engine
Go with the non-competition plenum and regular throttle body (74 mm). Competition should be used for engines 3.6 and bigger. This knowledge comes from a master engine builder and designer who resides in Georgia.
 
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thanks, bro
For some reason, I'm unable to message you so I'll be short...IPD offers a standard plenum which utilizes your existing 74 mm throttle body. They also offer a larger competition plenum which must utilize an 82 mm (GT3) TB. Research has shown that the competition setup can actually rob power on engines smaller than 3.6L regardless of bolt-on mods. Think of it as a fish dying of too much oxygen. It's simply too much air flow for a smaller engine. Therefore, go with the standard plenum. To maximize power, add the FVD sport headers to compliment your exhaust. And by all means, get a flash tune. It will tie everything together and take care of any enrichment problems you may encounter from adding a high flow exhaust. FVD also offers this. Your evomes filter should be fine although I prefer a simple drop-in such as BMC.
 

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For some reason, I'm unable to message you so I'll be short...IPD offers a standard plenum which utilizes your existing 74 mm throttle body. They also offer a larger competition plenum which must utilize an 82 mm (GT3) TB. Research has shown that the competition setup can actually rob power on engines smaller than 3.6L regardless of bolt-on mods. Think of it as a fish dying of too much oxygen. It's simply too much air flow for a smaller engine. Therefore, go with the standard plenum. To maximize power, add the FVD sport headers to compliment your exhaust. And by all means, get a flash tune. It will tie everything together and take care of any enrichment problems you may encounter from adding a high flow exhaust. FVD also offers this. Your evomes filter should be fine although I prefer a simple drop-in such as BMC.
Ive read a bit on plenums and no one really said it to the point as this. For a non-technical noob, this is much appreciated.

For for ALL caymans with stock engines, the IPD plenum suggested is
987.2 DFI Cayman S 3.4L IPD Plenum | Part #87474-3.4 which can run with the stock 74mm throttle body?

269875
 

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Ive read a bit on plenums and no one really said it to the point as this. For a non-technical noob, this is much appreciated.

For for ALL caymans with stock engines, the IPD plenum suggested is
987.2 DFI Cayman S 3.4L IPD Plenum | Part #87474-3.4 which can run with the stock 74mm throttle body?

View attachment 269875
Yep, utilizes the OEM factory throttle body
 

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Thanks. From your experience, are the gains worth the while? I've a tune but still on stock headers and R exhaust. Will be changing my filter to the AFE (not sure if this filter help as well).
 

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Thanks. From your experience, are the gains worth the while? I've a tune but still on stock headers and R exhaust. Will be changing my filter to the AFE (not sure if this filter help as well).
Funny thing is, I don't have the plenum yet. I'm having a 3.8L engine installed due to bore scoring and will be going with the competition next June. So I can't give you first-hand feedback. It depends on who you talk to. Some say it's the best mod for the Cayman while others say it's a total waste. I believe it's worth it because F6I has dyno tested and they proved to make noticeable power. They don't sell components (with their engines) that don't work. I's say that for $800, if you can gain 10 WHP/TQ throughout the mid-range RPM, it's worth it.
 

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I have a 3.4 with EVOMS air intake, and exhaust upgraded.
Decided to make my car slower with the IPD competition plenum and the GT3 body.

Doesn’t feel slower, but I’m not going through the expense of putting it on a dyno to prove it’s slower......

That said, I have not done a tune yet because I’m trying to determine who makes the best option for a tiptronic car with upgrades.
Softronic seems to be the front runner for the moment.....
 

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Softronic seems to be the front runner for the moment.....
I have no complaints with my Softronic tune. Scott knows his stuff.
 
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I have a 3.4 with EVOMS air intake, and exhaust upgraded.
Decided to make my car slower with the IPD competition plenum and the GT3 body.

Doesn’t feel slower, but I’m not going through the expense of putting it on a dyno to prove it’s slower......

That said, I have not done a tune yet because I’m trying to determine who makes the best option for a tiptronic car with upgrades.
Softronic seems to be the front runner for the moment.....
I don't think the standard remap it's butter solution.. I did that with Fabspeed to my 997 gt3and I was not happy until I go to costume or live tune! Then I did the same things with FVD they send me standard remap "stage 2" to my 2012 Cayman R and I still not happy I feel there is something missing..
 

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Just FYI, I reached out to IPD and this is their reply to plenum recommendation for the Cayman 3.4. Yes they are the makers of the IPD so read accordingly :

You DEFINITELY want to go with the 82mm Plenum and TB.

The 74mm is very restrictive and that’s how Porsche reduces engine performance.

People who say the 74mm TB is good enough have no idea what they are talking about. Porsche even uses the 82mm TB on the 991.1 Carrera Non-S 3.4L engine. Bigger isn’t always better for turbo applications but is it almost always better for naturally aspirated engines.

Plus there’s the fact that for every one 987.2 74mm Plenum we sell, we sell over thirty 987.2 82mm Plenums. Even the 2.9L Non-S customers run the 82mm set up.

The Plenum is a product of efficiency. There are net gains throughout both power and torque curves, with the bulk of the gains being in the mid-range where we want and need them most. There is absolutely zero loss in the low end. It’s a naturally aspirated engine, bigger is always going to be better.

I’ve attached a dyno to show exactly what you can expect to see and feel after installing the Plenum and larger 82mm TB.

269908
 

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Just FYI, I reached out to IPD and this is their reply to plenum recommendation for the Cayman 3.4. Yes they are the makers of the IPD so read accordingly :

You DEFINITELY want to go with the 82mm Plenum and TB.

The 74mm is very restrictive and that’s how Porsche reduces engine performance.

People who say the 74mm TB is good enough have no idea what they are talking about. Porsche even uses the 82mm TB on the 991.1 Carrera Non-S 3.4L engine. Bigger isn’t always better for turbo applications but is it almost always better for naturally aspirated engines.

Plus there’s the fact that for every one 987.2 74mm Plenum we sell, we sell over thirty 987.2 82mm Plenums. Even the 2.9L Non-S customers run the 82mm set up.

The Plenum is a product of efficiency. There are net gains throughout both power and torque curves, with the bulk of the gains being in the mid-range where we want and need them most. There is absolutely zero loss in the low end. It’s a naturally aspirated engine, bigger is always going to be better.

I’ve attached a dyno to show exactly what you can expect to see and feel after installing the Plenum and larger 82mm TB.

View attachment 269908
The plenum mod has to be the most controversial upgrade on the market. There's a lot of conflicting information from reputable sources which makes it frustrating.

IPD told me the same thing. "Given your full exhaust and flash tune, go for the competition setup". My engine builder says the competition is not beneficial on a smaller 3.4L. A specialist at SOUL Performance, who actually sells the plenum/TB on their website, told me to forego the plenum altogether months back. If I were in your shoes, I would get the competition and 82 mm TB. I tend to be a risk taker and would have buyers remorse if I bought the standard setup. No harm can come with more airflow. Worst case scenario, you don't gain any power but do have more intake noise. I'll reiterate though. Definitely get a tune afterwards and if it's in your budget, a set of headers. Headers make substantial power on our platform.
 
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