[BGXterra]

Has anyone installed a throttle spacer? is there noticeable improvement in power and fuel efficiency?
here is a link to the part I am taking about
http://airaid.com/520-605_nissan.asp

 

[AJ]

Junk.

 

[usmc xterra]

I wouldn't say Junk, they do what they say. But not quite as much as they say, let's say. Same principal as a high rise manifold. It does work. How much ? As far as the Vortex, well, it can't be as big a rip as a Tornado! MC

 

[B Slater]

I know that on older "Vortex" Chevys Airaids are junk because that was the reason they were called vortex. They had an airaid type device already designed into the factory manifold. I would think Nissan has done everything possible to design this in for efficiency too.

 

[usmc xterra]

Nissan has to comply with pollution standards, so their hands are tied. And that is where aftermarket takes off.
Plus, Nissan had little time left after spending so much time figuring out how to make the rear end bottom out. JK MC

 

[BGXterra]

Well i whish someone had installed it so I can find out if it is really worth it

 

[dragonplayboy]

Nissan has to comply with pollution standards, so their hands are tied. And that is where aftermarket takes off.
Plus, Nissan had little time left after spending so much time figuring out how to make the rear end bottom out. JK MC

I agree with you, but I sincerely doubt that increasing air velocity, and therefore fuel efficiency and horsepower has anything to do with pollution.

 

[MagEditor]

they dont do a thing.

 

[BGXterra]

they dont do a thing.

kool, then i just saved a ton of money

 

[dienliv]

It will certainly screw with the power output. It might not change the net output, it might move the powerband around for better or worse.

The single factor of length can affect power output. Variable length intake manifolds (VLIM) "As the name implies, VLIM can vary the length of the intake tract in order to optimize power and torque, as well as provide better fuel efficiency." (http://en.wikipedia.org/wiki/Variable_Length_Intake_Manifold)

According to Wikipedia, Nissan already applies the technology V6s and V8s.

What I would like to see is a dyno chart showing the difference. A dyno that charts both wide-open pulls and normal driving acceleration, and how wide the throttle needs to be open to maintain a constant highway speed. I'm think its going to screw with fuel economy.

 

[Jang Pilmo]

can dis Throttle Body Space...

work with a K&N Filter...

or do i need a INtake...

 

[dragonplayboy]

I put one of these on my buddy's 300c, we aren't sure it made a difference or not, but it kinda sounds like a supercharger, there's a whistling noise at certain rpm's