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Discussion Starter #1
Question:

Is the Newest Version of the kinetix Plenum better than the APS plenum that Ive read so much about. Also is the Kinetix plenum the only plenum out there that allows useage of the factory engine cross bar (sway bar)???

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The only plenum? Nope. SSR clears it as well. I would get APS if you plan on going F/I. Otherwise, the Kinetix would be fine.
 

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Discussion Starter #3
So with the APS I could still use mu strut tower brace??? I like the looks of teh APS Better as well

:helpsmilie:
 

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[/quote]
No. The APS plenum will not fit under the OE strut tower brace. Only the Kinetix and SSR (according to Brandon) will fit
 

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SSR with stock strut bar...
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The AAM spacer and 1/4" Motordyne spacer fit under the stock strut bar as well.

The new Kinetix fits under the stock strut bar.
 

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What is the SFR Plenum?

I also think that the new Kinetix plenum in preliminary testing should also be added into this thread.
 

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[/quote]

The APS tall boy plenum does require a new strut bar to be installed and for good reason.

The problem is if the performance plenum (APS or any other brand) is designed to work with the stock strut bar then the air flow to the two front cylinders is severely compromised, not an ideal situation imho. :cheers:

Peter
 

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[/quote]
They claim they are two different companies...however I don't see how when they sell the exact same products.
 

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Discussion Starter #12
Thanks guys...Has anyone gotten the new Kinetix yet..I know they were having cracking problems early on. The newest (I believe V4) claims to have no issues...Has anyone seen otherwise? If not sounds like Kinetix is the way to go then...
 

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Here is a breakdown of all the plenums on the market:

Upper and lower plenums

Kinetix version 4
Made of plastic resin and currently on version 4. Early versions had cracking issues, but I have not heard of any issues with the version for. I had the earlier versions and they were...um...crap. Don't know about the new one. It DOES clear the strut bar, but in my opinion, this is not necessarily a good thing. I think it still restricts the airflow to the front.
www.kinetixracing.com

Crawford version 5 or Cast Plenum
The version 5 is a stock plenum that has been modified. The cast one is a completely new casting. Neither allow use of the stock strut bar, which is probably good. Both produce good power. I happen to own a version 5 and it is going in on Tuesday.
www.crawfordzcar.com

2005 stock Nissan lower Rev-up plenum
This is the new OEM Nissan lower plenum from the 2005 Track and 35th anniversary models. It is the lower plenum, not the upper plenum. It has been tested by [email protected] on a 2003 model (http://www.350z-tech.com/forums/index.php?showtopic=6725). It shows a gain in HP, but a serious loss in torque (serious in my opinion). It will allow the use of the stock strut bar and it will look completely stock (good for warranty compliance).
www.performancenissanparts.com

APS Tall Boy
Not on the market yet and I am not familiar with the power claims. However, it is a new cast piece and you cannot use the stock strut bar. Likely the new Crawford cast plenum, this is likely a good thing.
www.airpowersystems.com

Intake manifolds

SSR Intake Manifold - pictured above
Currently on the market, but I am not familiar with the power produced, reliability, or other features. I does completely replace the upper and lower plenum. Probably good for F/I. You can use the stock strut bar.
www.speedforceracing.com

Kinetix intake manifold
Not on the market yet, but soon. Prototype phase has just been completed. However, given past experiences, I would not trust a kinetix product that is right out of testing. This is based on personal experience and the experience of others (I had a kinetix plenum version 1, 2, 3 and two separate sets of cats - nothing ever fit right or functioned well). This new intake manifold replaces the upper and lower plenum. It should be great for F/I and might clear the stock strut bar.
www.kinetixracing.com

Spacers

Motordyne Spacers
Offered in different thicknesses and some may allow the use of the stock strut bar. Also, I believe some of the spacers are beveled to allow the front to raised more than the rear. This should even out the air flow. I don't know much else about them. I do know the manufacturer posted dynos that show it is similar in power production to the Crawford plenum. I have not seen independent confirmation (but it probably exists).

Hope this helps.
 
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