AEM CAIs are great intakes, the Comptech icebox is supposed to be pretty good too. But when I look at them there are obvious flow restrictions. The bends and bend angles coming up from a cold air induction filter location must be significant. Then I came up with an awesome idea for a cold/ram air intake that eliminates all the bends, the heating of the intake air by the engine compartment. It came to me when I was looking on TODA's website and saw the sports fuel injection kit with the four straight, velocity stack topped intake runner/throttle bodies. Since the intake manifold is so close to hood and close to the windshield, you could have a custom hood with a couple NACA ducts or maybe a WRX-style ram air duct, and have an airbox around those four velocity stack throttle bodies, and you would have direct, cold ram air induction effect. Obviously, you would need to run some kind of filter, like four small cone filters on the intake trumpets or perhaps a rectangle, conventional filter in the scoop. And for rainy weather, you could just have a couple grooves custom made on the underside of the hood so you could slide some sort of blocking plate for the scoop with some kind of gasket seal around the edges to keep from self-destruction. I haven't seen anyone do that before on any ITR, CTR, anything. It would look pretty mean if the scoop was symmetrical because where the intake manifolds would sit is slightly to the driver's side, and I think symmetry is one necessary aspect of aesthetics. Performance wise, the advantages of pressurized (when up to speed) and cool air directly to the intake runners would be a large gain over an AEM or a Comptech. Although shorter, straighter intake runners generally provide less low-end grunt, the mid-range to top-end scream and power gains would be tremendous. I hope you all can visualize how genuinely bad-**** it would look and sound!

 

i'm kinda slow....are you saying that you want to put the filter right on the TB? sorry...

 

I thought it would be hard to visualize. But no, I mean to completely remove the factory induction system and intake manifold, and replace with with the four velocity stack/throttle body/intake trumpets. Go to http://www.todaracing.com, to products for B16A, B18, and look at it. Replace the stock intake maifold with it, and have a ram air hood custom made, with a small air box with filter(s), to ram cold air directly to the intake runners.

 

cool idea!, i can totally visualize it. I think the rectangular filter would be practical. Imagine this:

1.the rectangular filter sits on the tb's, and the hood would be cut in a rectangular fashion around that area.

-or-

2.the tb's are fitted with four cone filters and mesh or screen of some sort is fitted on the hood where it will be cut to allow air flow.

if all this was done on a carbon fiber hood it would even be better. So I also agree it would look trick, but would we actually pick up gains realistically?

 

I think Tony the Tiger is working on this idea already, as he has ITB's on his built motor. I guess we'll have to see what he does. There used to be a guy on this board that used to post that was building a crazy all-motor setup with ITB, but I can't remember his handle and haven't seen any recent posts.....anyone?

TWM makes an ITB setup for the Honda B16/B18 and they have a new "Dual Carb Air box" to go with it.

See http://www.twminduction.com

Here's the page with the box:
http://www.twminduction.com/Filter/FilterAirbox-FR.html


[Modified by Big Phat R, 2:44 PM 6/17/2001]

 

Doesn't having individual throttle bodies actually hurt bottom end performance?

 

I think that "Lip" has TWM ITB's on his ITR. I also think that numbers are coming soon...

 

old news: the dyno (untuned) has been posted by Lip...big day today....I wonder how he did...anyone?

 

hey, i noticed that graph is from Rampage Racing. how are they over there. do they do good work with R's?

thanks
argiris, who is impressed with those numbers