Pete, if you look at how the stock airbox is held down, you'll notice that it's not attached to the engine in any way. The airbox itself is relatively stationary. The flex of the engine is taken up by that "accordian" shaped rubber tube that goes to the TB. That stock inlet horn is actually attached to the radiator support. It too, is held in place and is solid with the airbox.

The OEM inlet sits on top of the radiator and draws air from in front of the rad. That hole you show in your picture lets air into the engine bay, where it's too late to be drawn into the engine. The whole problem as I've shown some years ago with my temp recordings is that the rad and the area just in front of the rad heats up the intake air tremendously once the rad gets up to operating temps. That slanted "airguide" in fact, is to prevent too much air from going up and over the radiator. It's there to channel air directly through the radiator. They actually had to cut slots in that airguide to allow air to get up past that guide to feed the horn.

"Velocity stacks" work best if there is no filter in the first place and if the stack leads directly to the intake manifold. In this case, the shape of that horn may purely be a matter of increasing the initial entry square area and not really acting as a "velocity stack". We see that elimination of this horn with the "snorkel" has no adverse affect on the air intake, even with that restriction I spoke of, but this is different because as the vehicle's speed increases, the snorkel does force air past that narrowing.

Whether or not this new invention will hamper high rpm airflow is yet to be determined, but as for a heat bog fix, I think this thing's going to do it. As for the brake's heat coming up, this won't happen. The brakes are behind that area in the front bumper and that area is separated by the wheel splashshield. Air that is heated by the brakes will not find it's way into the bumper area and this is where the air is taken from with this invention.

Let's take the AEM CAI for example. We all know that it's showing some proven gains. It also has 3 almost right angle bends. The stock airbox, with this invention also has 3 bends. I don't see the path the air takes will be that significantly different than some of the CAI and performance intakes out there.

 

Use your s2ki photo album?

 

He only bought his membership after he started this thread.

 

Would a "cooling plate" give a more direct air flow and achieve the same results as this tube to the fender? Just curious.

 

what about this guy?


https://www.s2ki.com/forums/index.php?showtopic=324675

hotrod, how's the fittment of that thing? and what does the underside of that thing look like?

 

Its as smooth on the bottom as on the top. The factory air guide was removed prior to installing the cooling plate.

 

No. That "cooling" plate (IMO) is a "mis-nomer". It still doesn't stop hot air from going into the airbox during those "heat bog" situations where vehicle speed is slow. The air still goes over the radiator and it still takes air from that area in front of the radiator where it's been heated up by radiation and convection. You may have more air movement just in front of the airbox intake when the car is going at speed and this makes it a better alternative to the OEM air horn and airguide setup.

That is probably a bit better than what Honda finally settled for but it still picks up that hot air that comes up through the slots in the airguide when the car is slow moving. I think that may be part of the reason that Honda never went with it. By having to go over the radiator, that same constriction is present that we see with the snorkel. For high rpm work, that restriction would be a detriment without the slight ram effect of the snorkel. It's far better to draw more air by having the horn cut short and not having the restriction.

This whole "heat bog" thing is a slow speed, bumper to bumper traffic scenario. It can be minimized or eliminated by adding or changing a component (snorkel, CAI, etc.) or by simply adjusting your driving style slightly to clear the hot air out of the intake system prior to trying to move off. I believe this is why Honda didn't fuss with it so much. High rpm intake flow is more important for an engine like this.
This invention would be great for those who can't quite get into the "altering of driving style".

 

I agree. Thats why I put "cooling plate". All I was hoping for was more air supply at speed with the plate. I've never really been concerned with heat bog in slow moving traffic. Thanks for the input/insight Xviper.

 

Many are interested with your project, if it isn't too expensive and it does actually reduce heat bog, then you have a hot selling mod for the S.
I am subcribed, sinve most my driving is city streets during rush hours.

 

Thanks, xviper!

-Pete