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Old 06-02-2020, 10:46 AM   #1
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IPD Plenum Need for TB upgrade?

If you install a IPD plenum do you need to install a 74 MM TB to match the IPD plenum?

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Old 06-02-2020, 11:58 AM   #2
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I was watching a video today, cant say for sure but I would say has to have the matching throttle-body. The whole purpose of the larger plenum is to install a larger throttle body. Anyway might try the IPD sight.
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Old 06-02-2020, 12:08 PM   #3
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The stock throttle body will no longer fit. Depending on the model you buy it will take a 74mm or larger.
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Old 06-02-2020, 12:09 PM   #4
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Quote:
Originally Posted by Cunningr View Post
I was watching a video today, cant say for sure but I would say has to have the matching throttle-body. The whole purpose of the larger plenum is to install a larger throttle body. Anyway might try the IPD sight.
I was thinking of increasing power via more air w/out replacing the TB.
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Old 06-02-2020, 12:24 PM   #5
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If you're going to spring for an IPD plenum, you might as well get a 74mm TB. Not very expensive on eBay.
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Old 06-02-2020, 12:34 PM   #6
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Quote:
Originally Posted by Ciao View Post
I was thinking of increasing power via more air w/out replacing the TB.
What is your plan to do that?
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Old 06-02-2020, 01:22 PM   #7
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Originally Posted by jsceash View Post
The stock throttle body will no longer fit. Depending on the model you buy it will take a 74mm or larger.
pretty much settles it; upgrade to ipd requires a larger TB
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Old 06-05-2020, 06:30 PM   #8
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74? go for 82.
before you go IPD, take a look at Ben's solution.
i have one of his 3D printed prototypes installed on my 996, and absolutly loves it.
http://986forum.com/forums/diy-project-guides/55966-intake-plenum-911-throttle-body.html
cant wait to get my dirty fingers on that new and shiny CF plenum.

Last edited by Meir; 06-05-2020 at 06:37 PM.
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Old 06-06-2020, 07:46 AM   #9
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74? go for 82.
before you go IPD, take a look at Ben's solution.
i have one of his 3D printed prototypes installed on my 996, and absolutly loves it.
http://986forum.com/forums/diy-project-guides/55966-intake-plenum-911-throttle-body.html
cant wait to get my dirty fingers on that new and shiny CF plenum.
How does Ben's solution compare to a 74 or 82 TB?
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Old 06-06-2020, 02:10 PM   #10
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How does Ben's solution compare to a 74 or 82 TB?
Hard to beat the price of the 997 distribution tee with the 996 throttle body. I have both in the garage but have to source the silicone boots to mate the 997 tee to the 986 intake manifolds. I also bought IPD's RIDICULOUSLY pricey silicone intake hose to run to the throttle body. I just haven't taken the time to do the install yet.
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Old 06-07-2020, 01:56 PM   #11
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If you need a run from the MAF to the throttle body you can make it yourself with silicone bends and a length of Ali tube with some jubilee clips.

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