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Discussion Starter #1
Dyno'd my car today BEFORE my custom plenum spacer is installed, it is being fabricated right now.

My highest numbers for today were 331.74 whp and 321.51 wtq
I'm not entirely impressed but neither shocked.

(picture)



(video)
http://www.youtube.com/watch?v=JNSVdNlsEyI

As for the plenum spacer, it will be similar to the one dinan produced. I should have it installed by early next week and can have more made. Once I install it and put about 300 miles on it(week or two), I will dyno it again and post the comparison

Leo
 

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what is your full mod list, as of now, before the spacer?
 

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So, what's the purpose of the plenum spacer?

will this make the intake tract longer? that would lower the rpm target for the resonant tuning of the ITBs
 

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Shill account for CNS Racing
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Not exactly an apples to apples comparison.

In the case of the 350Z, it's an aluminum plenum, with a single throttle body. Heat soak is more of an issue, which the spacer somewhat helps
 

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Are you manufacturing the spacer out of aluminum or phenolic?

How did you come to the dimension?

Can't wait to see the results.
 

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Discussion Starter #9
My current mod list

-uuc flywheel and clutch
-technik velocity stacks
-conforti shark injector
-magnaflow catback exhaust

My spacer will be made out of aluminum but if anybody wants one out of a different material that can be done as well
 

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how did those velocity stacks work or you?
 

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Discussion Starter #12

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awesome, can't wait to hear about the results. are you running any sort of CAI?
 

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Discussion Starter #15
I should have the complete kit and be installing it on wednesday.

the kit will include
-simple diy instructions
-plenum spacer
-easy to install stud extensions
-custom rubber gasket for the top of the spacer (M5's already have an oem gasket for the bottom of the spacer).

i'm making one for my car and if all goes well i can make more for the board members :cheers:
 

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awesome, can't wait to see how this pans out
 

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Wirelessly posted (Phone of CHUCK: Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; Smartphone; 176x220))

arent the velocity stacks specifically matched to the air volumn of the stock plenum... meaning once you install the new plenum the greater air volumn could actually cause them to hurt performance? or am I completely making that up?
 

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Leo has aftermarket stacks installed if I remember correctly, so the extra space is a much welcomed mod.
 

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I say dyno with the aftermarket stacks and oem stacks with the plenum spacer ... but watch out as the ecu might need sometime to readjust...
 
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