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Cosworth Plenum FI/NA: Pics Inside!

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Old Aug 19, 2008 | 02:51 PM
  #1561  
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thanks again man
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Old Aug 24, 2008 | 04:25 AM
  #1562  
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Originally Posted by turismo
Got mine yesterday

https://my350z.com/forum/engine/3788...num-stock.html

Damn this shiet is purty
$1600!!!! I didn't pay close to that for mine + polishing!!! But congrats!!!
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Old Aug 24, 2008 | 07:09 AM
  #1563  
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Originally Posted by Robert_K
$1600!!!! I didn't pay close to that for mine + polishing!!! But congrats!!!
What did you pay for yours? I know I wanted one forever and knowone had them in stock. Supply and demand I guess!
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Old Aug 24, 2008 | 07:24 AM
  #1564  
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Originally Posted by turismo
What did you pay for yours? I know I wanted one forever and knowone had them in stock. Supply and demand I guess!
Supply & demand for sure!!!! I bought mine via IP for $1100 () and $100 to get it polished from a local guy.
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Old Aug 25, 2008 | 02:31 PM
  #1565  
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That one came polished from Cosworth so I'm sure it was quite a bit more expensive from them.
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Old Aug 26, 2008 | 11:54 AM
  #1566  
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Originally Posted by Robert_K
Supply & demand for sure!!!! I bought mine via IP for $1100 () and $100 to get it polished from a local guy.

Or lack of supply LOL
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Old Aug 26, 2008 | 03:47 PM
  #1567  
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i should post my before and after dynos. it did very well on torque and helped me make power all the way to redline .. the seals held up well for the boost too..
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Old Aug 26, 2008 | 03:50 PM
  #1568  
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So no leaks chebosto? Anyone in the world have this in stock? Id buy it now.. like time now!! What psi does this thing leak at?

Last edited by Jay'Z; Aug 26, 2008 at 03:58 PM.
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Old Aug 26, 2008 | 03:59 PM
  #1569  
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no leaks so far. in addition to the gasket cord Cosworth uses. they suggest using another sealant on top of that.. which is what i did. and so far with 18+ psi runs on the dyno and some track laps. been holding up great.

the only thing is the bracket that holds the fuel lines/regulator snapped off the CF endcap.. might need to reglue it back on..
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Old Aug 26, 2008 | 04:06 PM
  #1570  
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Sounds good Chebosto..

The endcap snapped off or your bracket? Im not understanding your sentence..
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Old Aug 26, 2008 | 05:33 PM
  #1571  
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the harness for his fuel lines snapped off the endcap.
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Old Aug 26, 2008 | 05:34 PM
  #1572  
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Originally Posted by dspiel
the harness for his fuel lines snapped off the endcap.

Ouch.....
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Old Aug 27, 2008 | 10:15 AM
  #1573  
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Originally Posted by Chebosto
i should post my before and after dynos. it did very well on torque and helped me make power all the way to redline .. the seals held up well for the boost too..

Very interested in your results.

Are you still on the original PE Turbos? Also did you upgrade your intercooler?
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Old Aug 27, 2008 | 12:37 PM
  #1574  
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<~No leaks and peaked at 11psi.
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Old Aug 27, 2008 | 01:06 PM
  #1575  
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i'm running like two step ups on the wastegate springs. but still stock PE 1420 turbos that came with the kit-
same intercooler. just changed the charge pipe from 'cool' end of ic to throttle body. its all one long tube now (sorta like what the prototype pieces were) instead of the stupid bends to accomodate the OEM maf housing.

sorry i didnt have time to scan the pict. so i used my camera phone.. the graph before isnt the smoothest, tried to find one of the runs that was before (Black line.. back in may).. and the line in red was same boost level setting (i.e. didnt touch it) and slight retune after the plenum install (done back in july). all was using 91 pump gas. technosq reflash... this was done on technosquare's superflow dyno.. which is about 16% less than dynojet dynos...

you can see from the torque i gained alot in the midrange. and HP pulled all the way to redline..

after this we tuned up the boost even more and got some more power. but the tq and hp lines were similar..
Attached Thumbnails Cosworth Plenum FI/NA:  Pics Inside!-cosworthb4after.jpg  

Last edited by Chebosto; Aug 27, 2008 at 01:09 PM.
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Old Sep 1, 2008 | 04:26 AM
  #1576  
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Default ?? Na????

anyone have this on a close to stock NA car? I want to see how much it gain.
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Old Sep 1, 2008 | 11:33 AM
  #1577  
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^ i know a g35 member who has it on his car, he doesnt have any FI. He said the gains were minimal...this thing works best with FI.
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Old Oct 24, 2008 | 12:36 PM
  #1578  
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Updates on the unicorn?
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Old Oct 24, 2008 | 06:38 PM
  #1579  
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PAPER WEIGHT.
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Old Oct 25, 2008 | 05:29 AM
  #1580  
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Don't hate. My Cos helped me reach high tq. numbers on my HKS S/C at 12 psi--over 400 tq.
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