Plazmaman Plenem Vs Greddy

[RBceffy25]

No offence but that looks hideous and it's ability to flow well would be questionable.

In fact it came of an RB25DET pushing around 500rwhp

I couldnt give a shit what it looks like as long as it does its intended job.

Please justify 'questionable'?

Edited April 28, 2010 by RBceffy25

[PM-R33]

Lol no need to get pissed off about it, just said it looks terrible. It's not like you made it and im saying your work is shit.

Whether it made 500HP is irrelevant, you can do that on the stock plenum (for reference the Plazmaman one is rated at 1000HP worth of flow, in other words its "horsepower flow" is irrelavant.)

Its just a stock plenum that has been cut up and made into a foward facing plenum (as many people do) but he has changed the centre of it completely, however do you think it has been created to flow well and R&D put into it to flow as evenly as possible like a Plazmaman or Greddy one would? Just saying. It may flow well, it may not, hence my "questionable" comment.

Edited April 28, 2010 by PM-R33

[RBceffy25]

Lol no need to get pissed off about it, just said it looks terrible. It's not like you made it and im saying your work is shit.

Whether it made 500HP is irrelevant, you can do that on the stock plenum (for reference the Plazmaman one is rated at 1000HP worth of flow, in other words its "horsepower flow" is irrelavant.)

Its just a stock plenum that has been cut up and made into a foward facing plenum (as many people do) but he has changed the centre of it completely, however do you think it has been created to flow well and R&D put into it to flow as evenly as possible like a Plazmaman or Greddy one would? Just saying. It may flow well, it may not, hence my "questionable" comment.

All good mate no offence taken and I’m not shitty lol.

I understand everyone is entitled to their opinions however, it might pay to keep 'possibly' offensive comments to yourself. If I 'had' made it myself would you have made the same comment? Food for thought.

What I meant by "pushing around 500rwhp" is that the guy I bought it from obviously had no problems with it flowing well.

I love the pics of your engine bay and most of the way you have gone about your build but there are certain things I would have done differently. But I’m not about to start criticizing you for this.

It’s these differences that make owner/building and modifying such a personal thing and it’s what keeps forums and discussions such as these happening.

I chose to use this modified forward facing plenum as I am building/modifying on a very tight budget and cannot afford some of the more exotic items on the market. I have researched the factory modified forward facing plenum and it suits my intended build and purpose just fine especially from a budget conscious point-of-view.

I did not intend to compare my plenum to either the plazmaman or the greddy.

I was actually looking for info in regard to the benefits of using a much larger than standard throttle.

Any way back to the question.

I'm worried about the affects of turbulence as a result of interrupting laminar flow, So can anyone please tell me what the pro's and/or con's are of changing to a larger than standard throttle body?

[PM-R33]

Fair enough man. And no I would have not made the comment if you said you made it as I would not have wanted to offend your work, but since you said it was off ebay, hence I made the comment as I didn't think it mattered. All good.

Edited April 28, 2010 by PM-R33

[dano4127]

Cheers man. Turned out pretty good for a first effort. They are quite good at concealing a bunch of things

exactly why I am doing them

[libardi]

a little off topic here. do you need to change the throttle body or will the standard R33 one bolt on?

[TiTAN]

the Greddy requires an adaptor to bolt the stock one on. i am not sure about the plazmaman ones.

[PM-R33]

Plazmaman bolts the stock one on. I'm still running the stock throttle on mine.

Edited April 30, 2010 by PM-R33

[rad100]

do u need a retune once the plenum has been installed?

[Get EPIC]

do u need a retune once the plenum has been installed?

I did. I'm not sure if it's necessary ,but i went fom a return flow cooler with original plenum to a standard front mount with a forward facing plenum and i gained 13 rwhp up top.Made more power down low until 4100rpm.Then made less power until 5100rpm.After that it just pulled better nicely til 7200rpm where as before that it stopped rising in power at about 6700rpm.

[rad100]

well i received my plazmaman plenum today... WOW its a workmanship..

but all i have to say the greddy has over this is that it comes with all the little nuts and bolts to bolt it up...

saying that i would not ever trade this beauty in! amazing..

+1 for plazmaman!

[PM-R33]

Hahaha yeah I remember that. Got it all ready to put it on and then was like f**k this didn't come with any fittings lol.

[rad100]

yeh im soo excited... the workmanship is insane..

u know what bits i need?

[frozenwaffles]

hmmm this is interesting guys...

my one came with all the right bits, but i did go out and see the guys and pick it all up...

[BI6TIM]

Hey guys, I've got the Plasmaman plenum on my r33, came with the car when I bought it. Just took it for a dyno tune and my tuner said he doesn't like the Plasmaman plenums as they don't distribute air evenly to all cylinders. He then proceeded to show me the different colours of the plugs.

Anyone else come across this before regarding the Plasmaman plenum?

[frozenwaffles]

Hmmmm have you had your injectors bench tested for even flow???

[Roy]

Anyone else running plazmaman plenum bothered to pull their plugs and see if they are or not even

Also, anyone running anything other then the plasmaman throttle or std throttle body?

[335]

Where can you order the Plazama Man plenem from? How much is it and will it work on a RB20 DET? I am writing from Japan so I would have to order it and have it shipped here.

[wolverine]

http://www.plazmaman.com/index2.php

[335]

I read that the Greddy reduces the midrange of a RB25 a lot.

The RB25 that I just received has a Greddy Plenum already on it, is there a way to bring the mid-range back to the engine?