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FoxV35 Rising Star

FoxV35

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haha~

ARC? which one is more expensive? lol, if u think the NRG are good, then we can group buy it~, but where? from ebay? lol

and can u make sure if NRG has 2 bolts or 3 bolts on the mount?

cheers

I'm in Melb.

The other brand i know is ARC. I read the people in US really swears that the NRG are good. but i don't know.

I just don't justify to spend a Sturt bar for nearly AU$500 unless we as Whiteline to make one for us.

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WazR32GTSt Grand Master

WazR32GTSt

Posted
Posted

keep in mind that the NRG bars have issues with touching the bonnet. there is very little room between the engine cover and bonnet

i got mine form STILLEN (www.stillen.com) their bar is by far the best from what i have read and my own experiences. all you need is the 350z engine cover instead of the stock one and it still looks stock :D

FoxV35 Rising Star

FoxV35

Posted
  • Author
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keep in mind that the NRG bars have issues with touching the bonnet. there is very little room between the engine cover and bonnet

i got mine form STILLEN (www.stillen.com) their bar is by far the best from what i have read and my own experiences. all you need is the 350z engine cover instead of the stock one and it still looks stock :P

thanks for the info mate~

and pw350gt what do you think?! :)

WazR32GTSt Grand Master

WazR32GTSt

Posted
Posted

plenum spacers are rubbish...

all they do is increase the volume of the intake manifold and thus lean out the mixtures across the rev range. that can be done more safely with an ECU tune

i have yet to see 1 pre and post dyno graphy showing a plenum spacer doing anything.

its snake oil until proven otherwise.

n15m0 Grand Master

n15m0

Posted
Posted
dyno proof?

same car, same day, no ECU tuning?

i'm happy to be shown clear evidence

http://www.350zmotoring.com/forums/modific...rawford-v5.html

I've been reading about this a fair bit as well and from what I can see, the guys in the US seem to swear by it and the gains are pretty noticeable.

WazR32GTSt Grand Master

WazR32GTSt

Posted
Posted

ok my thoughts..

first, i can't access the dyno graphs as i'm not a member ofthat forum and thus can't downlaod attachments. but assuming they show a gain my though don't really change.

the good points in that thread:

- same car

- same day

- same dyno

the bad points:

- test was not independent (ie it was done by the manufacturer) thus an element of bias

- there was no comparison made against a stock plenum, only against an aftermarket (crawford) plenum

- and finally, the biggest issue, what were the AFRs?

you see, i believe all it does is lean out the air:fuel mixtures by increasing the intake plenum volume of air. if you can show me the air:fuel ratios i think the spacer will just show that the car has leaned out and this accounts for the entire of the power gain

to make my point, a good test would be put on the plenum spacer and check power vs AFRs. then, take it off and put the stock plenum on and tune the ECU to run the same AFRs as it had with the spacer.

so unless the graphs so something like AFRs etc on it, that thread is no proof that the spacer works

  • 6 months later...
siu_loong_bao Rising Star

siu_loong_bao

Posted
Posted

i think we should do a group buy to register our interest, then go approach whiteline...hopefully, they should be around $150 as all they are is a piece of strengthened aluminium, 2 bolts, 2 hinges...

anyone here knows a contact at whiteline that can help? i dun wanna be the leader on this buy and would leave it up to a more capable forumnite...

Maybe, at the same time, whiteline can also do all the other various struts and braces for the V35....come on guys, let's band together!!!

Oaksey Enthusiast

Oaksey

Posted
Posted
you see, i believe all it does is lean out the air:fuel mixtures by increasing the intake plenum volume of air. if you can show me the air:fuel ratios i think the spacer will just show that the car has leaned out and this accounts for the entire of the power gain

to make my point, a good test would be put on the plenum spacer and check power vs AFRs. then, take it off and put the stock plenum on and tune the ECU to run the same AFRs as it had with the spacer.

so unless the graphs so something like AFRs etc on it, that thread is no proof that the spacer works

I can see what you are saying BUT if you believe the gain is because of a greater volume of air making its way into the cylinders, would you also agree that with the same AFR, more air and the corresponding amount of more fuel results in a bigger boom, that is more hp?

After all, that's what a super/turbo charger set up does but to a much greater degree.

worldwalker Contributor

worldwalker

Posted
Posted
I can see what you are saying BUT if you believe the gain is because of a greater volume of air making its way into the cylinders, would you also agree that with the same AFR, more air and the corresponding amount of more fuel results in a bigger boom, that is more hp?

After all, that's what a super/turbo charger set up does but to a much greater degree.

90% thats what an ECU does anyway. Give the correct AFR. Why bother o2 sensors if that's not the case. I'm also very confused by this "without an ECU retune" stuff. I've read it in every counter argument. In order to make any modification 100% beneficial (even running the car on 98 instead of 100octane really should be considered) you need a retune. What should be said is, same car, same dyno, with a retuned ECU without the plenum spacer and a retuned ecu with the spacer. A retuned ECU either way is bias but a test without a retuned ECU isn't going to show any 'true' gains.

A final point on ECU's; If what you say about allowing more air into and through the engine is true and the ECU cant keep up, the same can really be said for any airfilter, intake or exhaust upgrades. I know that contradicts my above statement but 100% 'efficient' upgrade or not we know that, within reason, a freer flowing intake and exhaust will show power gains.

Dont mean to sound like an antagonist just trying to understand what you mean.

/hijack

I know this is an odd (and somewhat nuebie) question but what is so special that makes the bars so expensive? I mean I have a factory bar from an SiR civic here and its pretty simple. It'd probably take me an hour to copy it. Same can be said for the brace on my SW20.

Please correct me but my understanding is that its meant to be a fairly rigid device to prevent body/chassis roll. If this is that case how much technology needs to go into it? Serious question; I'd rather have a friend tig up a chrome one than spend a small fortune on the same thing with a sticker on it.

Regards

nick

V35_Paul Veteran

V35_Paul

Posted
Posted
I know this is an odd (and somewhat nuebie) question but what is so special that makes the bars so expensive? I mean I have a factory bar from an SiR civic here and its pretty simple. It'd probably take me an hour to copy it. Same can be said for the brace on my SW20.

Please correct me but my understanding is that its meant to be a fairly rigid device to prevent body/chassis roll. If this is that case how much technology needs to go into it? Serious question; I'd rather have a friend tig up a chrome one than spend a small fortune on the same thing with a sticker on it.

Regards

nick

Well if you can get one made for me (a CHROME one) that will fit the v35 with a SKUNK2 plemun spacer i'll pay up to $300. If it's good enough

Japav Collaborator

Japav

Posted
Posted
i can / will organise a group buy for the NRG one if people are interested...

Does fit to a sedan~? :)

i need one. but i have a plemun spaer. So if there is one out there that would fit i'll buy it quick smart

If so, here is the list~

1. V35_Paul

2. Japav

worldwalker Contributor

worldwalker

Posted
Posted
Well if you can get one made for me (a CHROME one) that will fit the v35 with a SKUNK2 plemun spacer i'll pay up to $300. If it's good enough

I did a fair bit of reading last night on the topic. I'll start with a mild steal one and if that works then I'll have my friend tig up a chrome one.

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