I was looking to increase some fuel effeciency, get more hp..etc.

I've heard of the "ram style" cold air aftermarket intake systems, they're are basically a metal tube with a filter on the end that will replace the air filter and the hose. The short ram stays next to battery, and the longer ram requires drilling/cutting a hole in front of the wheel where it will suck up air there (colder air).

But, wait! Now, I see someone on ebay selling this device.. it works with regular air filter or the aftermarket rams. It's looks like it's simply a metal ring with bent fins that goes in the end of the air tube right after the filter.

It looks pretty primitive, just putting some fins to change the way the air flows? Huh, didn't think something like this would make much of a difference. So is this a scam, or does this really work in saving gas on top of an aftermarket ram?

If so, I'll probably just make one myself, heck it's just a piece of metal that fits inside the hose with some fins that change the way the air flows into the tube....

Here's the link:
http://cgi.ebay.com/ebaymotors/Perfo...item35b4c61667

 

dont waste your money

 

as valid as your statement is, i think we can be more technical in a tech forum.

OP: for one, turbulent air is undesireable untill the charge arrives in the chamber ready for combustion. if a spining vortex of air could be proven to have positive effects (i'm not aware it has been) i don't imagine it would be too effective upstream from the throttle body like your picture suggests. the throttle plate (at wide open throttle) would act to straighten it back out like a horizontal fin or an A/C vent.

i feel pretty confident in saying that one of these would cause more of a flow restriction than anything. that could cause you to use less gas... like a restrictor plate in NASCAR... but driving technique would do just as well or better- light on the accelerator.

 

Agree. The point of a device like this is to promote swirl inside the intake to help with fuel atomization. Unfortunately, in your case, the device is placed upstream from the throttle plate. The throttle plate will cease all vortex action due to it's design.

If the throttle plate weren't a factor, there is still something else that will cause this device to be useless. After the upper intake plenum, the air must change direction and move through four separate tunnels before even reaching the fuel injectors. At that point, any vortex action would have been disrupted.

Besides, Honda's engineers are actually quite intelligent and educated. They've already designed the engine to promote swirl without any added "devices".

You'll probably see the most increase in MPG's by being a little lighter on the throttle.

 

Or a K&N drop in filter