cosworth intake plenum
#1
cosworth intake plenum
Does anyone have one? Is there any info other than the advertising paragraph on the performance of the plenum? How it works on a stock z vs turbo or weither its worth the money. I figure its around the price of exhaust and the performance numbers seem a bit better than exhaust, but i havent herd anything about it since it came out. Anyone?
Trending Topics
#9
Registered User
iTrader: (24)
Join Date: Jan 2008
Location: Oklahoma City
Posts: 645
Likes: 0
Received 0 Likes
on
0 Posts
#10
Registered User
iTrader: (15)
If you have full bolt ons and a good tune, you're looking at a total gain of 35-45whp depending on the engine you have (DE/revup).
Confused still?
#12
350Z-holic
iTrader: (25)
Uhh, I think I was pretty clear. If you install just the spacer, you'll gain 8-10 whp peak. Maybe better avg across the entire power band.
If you have full bolt ons and a good tune, you're looking at a total gain of 35-45whp depending on the engine you have (DE/revup).
Confused still?
If you have full bolt ons and a good tune, you're looking at a total gain of 35-45whp depending on the engine you have (DE/revup).
Confused still?
#13
New Member
iTrader: (66)
This plenum is not worth it IMO. It was confirmed in a few dyno sessions in a N/A Z that it had actually lost power throughout the RPM range, well, gained 2 whp only at certain RPM range........ No doubt it does look pretty, but to pay $1300 to lose power?? Sorry, I will stick with my Motordyne spacer.
#14
350Z-holic
iTrader: (25)
This plenum is not worth it IMO. It was confirmed in a few dyno sessions in a N/A Z that it had actually lost power throughout the RPM range, well, gained 2 whp only at certain RPM range........ No doubt it does look pretty, but to pay $1300 to lose power?? Sorry, I will stick with my Motordyne spacer.
#15
Registered User
iTrader: (24)
Join Date: Jan 2008
Location: Oklahoma City
Posts: 645
Likes: 0
Received 0 Likes
on
0 Posts
This plenum is not worth it IMO. It was confirmed in a few dyno sessions in a N/A Z that it had actually lost power throughout the RPM range, well, gained 2 whp only at certain RPM range........ No doubt it does look pretty, but to pay $1300 to lose power?? Sorry, I will stick with my Motordyne spacer.
#16
Registered User
iTrader: (15)
Alright magazine racer. I have forgotten more about vq engines than you have ever known. Yes, if you combine the right parts and a Great tune you can pick up 40whp ( I have picked up 41 over my baseline). 8-10 is excessive for just a spacer. Generally speaking bolt-ons and tune will net you 25-30whp. Now back on topic please.
8-10whp is excessive for a new manifold? Really? Have you seen the net gains for the MD? I don't see why you think my numbers are unrealistic. Now back on topic please...wait we already are on topic. We're talking about the gains the Cosworth manifold spacer would have with and without a combination of bolt-ons.
So my range of 35-45whp was correct. You proved it yourself unless you're leaving something out of your sig. 41whp over baseline? Quit talking about yourself and all you've forgotten, like logic, and get back on topic.
#17
Former Sponsor
iTrader: (564)
Join Date: Feb 2003
Location: Long Island, New York
Posts: 19,266
Likes: 0
Received 5 Likes
on
5 Posts
This plenum is not worth it IMO. It was confirmed in a few dyno sessions in a N/A Z that it had actually lost power throughout the RPM range, well, gained 2 whp only at certain RPM range........ No doubt it does look pretty, but to pay $1300 to lose power?? Sorry, I will stick with my Motordyne spacer.
on an engine with the right cams/header combo, and some form of ecu tuning, it is a very, very worthwhile piece actually
#18
350Z-holic
iTrader: (25)
Ok, guy. Your tone and intent of your response is comical.
8-10whp is excessive for a new manifold? Really? Have you seen the net gains for the MD? I don't see why you think my numbers are unrealistic. Now back on topic please...wait we already are on topic. We're talking about the gains the Cosworth manifold spacer would have with and without a combination of bolt-ons.
So my range of 35-45whp was correct. You proved it yourself unless you're leaving something out of your sig. 41whp over baseline? Quit talking about yourself and all you've forgotten, like logic, and get back on topic.
8-10whp is excessive for a new manifold? Really? Have you seen the net gains for the MD? I don't see why you think my numbers are unrealistic. Now back on topic please...wait we already are on topic. We're talking about the gains the Cosworth manifold spacer would have with and without a combination of bolt-ons.
So my range of 35-45whp was correct. You proved it yourself unless you're leaving something out of your sig. 41whp over baseline? Quit talking about yourself and all you've forgotten, like logic, and get back on topic.
Do you have any dyno proof of gains with your Cosworth on your car? No, because you would have posted them instead of your continued speculation.
/end thread.
Sorry for the aggressive tone everyone, but I can't stand magazine/e dyno racing.
P.S Adam, thanks for sending me the shipping invoice yesterday.
Last edited by 03threefiftyz; 06-17-2009 at 09:25 AM.
#19
I'm considering the Cosworth for my NA. I'm in the market for 250+ whp on my DE and I'm buying a lot of bolt-ons for power. I'm getting a reflash when I'm finished so would you recommend that I purchase a Cosworth now? Or is it only good if I have the engine rebuilt (cams,heards,etc)?
I have a Skunk2 spacer that came with my Z but I would love to get changed for the Cosworth or MD. Thanks for the help.
#20
Former Sponsor
iTrader: (564)
Join Date: Feb 2003
Location: Long Island, New York
Posts: 19,266
Likes: 0
Received 5 Likes
on
5 Posts
A spacer is ultimately a more cost effective solution for a car without cams, built motor, etc. The reality of the situation is the Cosworth is an absolutely fantastic piece....especially considering the price. While ~$1100 is nothing to sneeze at, for the quality of the piece you get, it's a bargain. Airflow wise, we've spent the last week or so playing with one on the flow bench and with the manometer - it's a stellar part. My engine builder said (paraphrased) "we couldn't build a VQ that would flow as much air as this thing will support" (N/A - I'm sure FI is a different ball game, but as we've seen, the Cosworth dwarfs a spacer for high boost situations). After spending the time with it on the bench, it was clear what Cosworth was trying to do with this piece. The airflow is nearly equalized among all cylinders right out of the box (extremely close to being totally equal between each cylinder, which is pretty neat for a production part), and the velocity is all geared around using the stock throttle body. They did their homework, and then some when they designed and created it. In addition, it is clear that Cosworth was going solely for power in the 5k + range. If we could rev a VQ to 10k or 11k, this thing would still keep up.
For that reason, it would be tremendous overkill for a mild setup such as yours. But, it certainly looks cool and would work; just that the spacer is the more cost effective method and would net you a bit better area under the curve on car with basic bolt ons. Ultimately, it comes down to your own personal preference.
I'll be posting dyno's with the Cosworth on my car within about 4 weeks I hope (fully built DE), so stay tuned to my thread in the built NA section
For that reason, it would be tremendous overkill for a mild setup such as yours. But, it certainly looks cool and would work; just that the spacer is the more cost effective method and would net you a bit better area under the curve on car with basic bolt ons. Ultimately, it comes down to your own personal preference.
I'll be posting dyno's with the Cosworth on my car within about 4 weeks I hope (fully built DE), so stay tuned to my thread in the built NA section
Last edited by Z1 Performance; 07-20-2009 at 04:52 AM.