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-   -   What's up with Cosworth plenums? (https://my350z.com/forum/intake-exhaust/357701-whats-up-with-cosworth-plenums.html)

__jb May 7, 2008 05:27 PM

What's up with Cosworth plenums?
 
What's up with Cosworth plenums?

I remember all the ruckus and waiting lists and anticipation.

Did they turn out to be a flop? I know a few of them had leakage problems around the end caps. Did everyone give up on them all ready?

Are they totally worthless for an NA VQ? Even one that will turn fairly high RPM?

Just wondering what's going on... It's like they slipped from the face of the earth...

Jay'Z May 7, 2008 05:32 PM

I guess they flopped.....

Nexx May 7, 2008 05:37 PM

they didnt flop per say, you just need a very serious setup to take full advantage of one. $1500 is just too much for bling factor.

rythex May 7, 2008 05:38 PM

wtb chinese copy of the plenum.

Ruthless18x May 7, 2008 06:24 PM


Originally Posted by Nexx
they didnt flop per say, you just need a very serious setup to take full advantage of one. $1500 is just too much for bling factor.


Holy hell, 1500? I got mine for 900.

jonnylaw May 7, 2008 07:02 PM

Not worth it N/A imo (first-hand knowledge). F/I or high rpm use, maybe.

IIQuickSilverII May 7, 2008 07:05 PM


Originally Posted by jonnylaw
Not worth it N/A imo (first-hand knowledge). F/I or high rpm use, maybe.


yeah +1 on n/a and not a maybe fi, injected showed clearly what the manifold can do on top end on a Fi application.
As far as i know the only one that leaked was eaglegreens set up, but injected had no issues, i believe they eve ran it on their drag car :icon11:

__jb May 8, 2008 11:04 AM

Thanks for the info...

There must be some kind of rule... If an intake looks really cool... it doesn't perform well... Shame...

Jay'Z May 8, 2008 11:07 AM

It flopped bottom line.......... :icon22:

go-fast May 8, 2008 12:41 PM

hype strikes again

Z1 Performance May 8, 2008 02:25 PM

it didn't flop at all IMHO - the problem is the masses 'hoped' it would be the second coming for a car with bolt ons, which is was never designed to be. Foir your typical bolt on car, its looks nice and performs assentially as well as a plenum spacer. For FI use its shown to give very nice gains. I wanted to try it on my car, but the biggest issue is you just can't get your hands on one. No one has them and Cosworths eta's keep changing. Time will tell if its worthwhile for a built NA setup.

jonnylaw May 8, 2008 02:48 PM

N/A gains similar to a spacer for 4-5X the cost isn't so good

Zivman May 8, 2008 02:50 PM


Originally Posted by __jb
What's up with Cosworth plenums?

I remember all the ruckus and waiting lists and anticipation.

Did they turn out to be a flop? I know a few of them had leakage problems around the end caps. Did everyone give up on them all ready?

Are they totally worthless for an NA VQ? Even one that will turn fairly high RPM?

Just wondering what's going on... It's like they slipped from the face of the earth...


Since nobody really said it.

EVERYTHING is totally worthless for an NA VQ....

IIQuickSilverII May 8, 2008 02:56 PM


Originally Posted by go-fast
hype strikes again

explain how teh testing Injected performed = hype :confused:



+1 on cosworth flopping for not producing the product as demand



Originally Posted by Zivman
EVERYTHING is totally worthless for an NA VQ....

i agree, it really isnt worth modding NA other than 2,3 bolt-ons at best

jonnylaw May 8, 2008 02:59 PM

Given, the Cos definetly has its strength in high rev F/I applications, as proven by Injected and Forged's testing.

But for the rest of applications, it's definetly not the holy grail of manifolds that many thought it would be..Slow productions doesn't help matters.

IIQuickSilverII May 8, 2008 03:03 PM

lol...there are NO WHOLY GRAIL MODS N/A anyways :dunno:

jonnylaw May 8, 2008 03:05 PM


Originally Posted by IIQuickSilverII
lol...there are NO WHOLY GRAIL MODS N/A anyways :dunno:

Tony's rumoured 40 lb trq. gain exhaust "component";)

Z1 Performance May 8, 2008 03:06 PM


Originally Posted by jonnylaw
N/A gains similar to a spacer for 4-5X the cost isn't so good

again, not the piece to pick if all you have is bolt ons...but that doesn't stop people from claiming they "must have it". For the right application, it definitely delivers the goods and is priced very fairly for being a cast piece with the carbon bits

Z1 Performance May 8, 2008 03:07 PM


Originally Posted by Zivman
Since nobody really said it.

EVERYTHING is totally worthless for an NA VQ....

I'd respectfully disagree :) Different paths, but either can be a nightmare, or very rewarding, depending on a variety of factors

IIQuickSilverII May 8, 2008 04:34 PM


Originally Posted by jonnylaw
Tony's rumoured 40 lb trq. gain exhaust "component";)

:icon14:
and probably worthless for FI(backpresure), so whats your point ...its just the situation reversed.


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