Hey I am getting a set of TWM 50mm ITBs in a couple weeks for my All Motor H22a. I was thinking of a good way to set it up and thought that a ram air setup and a big air box aorund the ITBs might not be a bad idea..

Does anybody have an ideas/input on Ram-Air design and things I should keep in mind? Or is it as simple as make a box/clyinder as big as I can fit in the bay and mold in a scoop? I'll be doing mine in several layers of carbon fiber most likely. Should it be an entirely closed system or should there be some sort of relief valve for when the plates are closed?

Is there any sensors that I can use to gauge the ram air effect at higher speeds to make adjustments on my AEM EMS?

Thanks!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">Hey I am getting a set of TWM 50mm ITBs in a couple weeks for my All Motor H22a. I was thinking of a good way to set it up and thought that a ram air setup and a big air box aorund the ITBs might not be a bad idea..</TD></TR></TABLE>

wouldnt that defeat the purpose of ITB's?

 

use the area at the base of the windshield for the incoming air. If you are going to enclose them in a box, make sure that there is some sort of "trap" with drainage for when it rains.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmDXrex &raquo;</TD></TR><TR><TD CLASS="quote">

wouldnt that defeat the purpose of ITB's? </TD></TR></TABLE>

ummm...no. Apparently you don't know the purpose of ITBs.

 

I was in the process of doing just that before i sold the car...but...







for my teg i couldn't use the twm airbox because the master brake cylinder was in the way unlike the smaller civics...but if you can get away with it...buy twm's and seal it up.

http://www.twminduction.com/airbox.htm

as far as the way i was doing it...go to your local home depot/lowes and take a look a the different sized pvc plumbing fittings. If your ingenius enough you can do a nice bend right into the backside of an air box from either the windshield pressure area or to a scoop

 

there is a way to do vss corrections.

got fuel_advanced fuel_fuel trims_fuel trims

notice the window that should come up in the top right, user #2 fuel trims analog input. you can change that to vss.

the corrections are based on percent of min and max for the input. min is 0, max is 255.

OR you could get a spare map sensor and put it in the air box and wire that into the ems as a baro sensor, use that for barometric pressure corrections.

ideally the way you would want to set the car up w/the ems is to have a normal map sensor and run speed density, but use a TPS based fuel map. you want to keep the ignition map based on MAP pressure, not tps. its kind of confusing, but the ems has the option to make only the fuel map tps based. then use another map sensor in the air box like i said before. there is a baro correction table in the fuel trims

 

Go to home depo or lowes and buy some dryer hose(metal). It's flexable and can be bent to shape, and comes in some larger diameters. That's the only thing I have ever seen done, aside from putting filters on the stacks.

 

Thanks for the info guys, that's great. I am still up in the air as to whether ITBs vs. a ported Euro-R manifold. I'm kind of concerned about streetability of the ITBs, like I can't get pulled over all the time and spend all my life tuning.

Defintely need some more thought on this.

 

talk to jack at P1, i know he has done a couple of toda itb setups. he would be able to tell you about the noise and streetability of the setup. with the ems setup properly tuning shouldnt be an issue.... the noise i cant help you with though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lip &raquo;</TD></TR><TR><TD CLASS="quote">I was in the process of doing just that before i sold the car...but...



for my teg i couldn't use the twm airbox because the master brake cylinder was in the way unlike the smaller civics...but if you can get away with it...buy twm's and seal it up.

http://www.twminduction.com/airbox.htm</TD></TR></TABLE>

I work with Carbon in my spare time so I think I could come up with something. Is that just a black hood cut up? Or is it carbon fiber?

That's nice though.

 

If I were to make my own airbox....is there anything I need to consider with sizing? Or is as big as you can the rule of thumb here?

 

thats the stock steel hood.

nice huh? I'm trying to look for an old photo of Larry Herrings lime green crx with a huge cowl induction hood. He had the velocity stacks point upward at the cowl area.

someone IM'd me about the doors...here is a photo or 2 or 3. yes steel hatch as well...but it weighed nothing after i was done with it

 

Go to our web site for photos of our big *** scoop before it hit the wall. http://www.gtpracing.com

 

hey there it is.

thanks Rick

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GTPcrew &raquo;</TD></TR><TR><TD CLASS="quote">Go to our web site for photos of our big *** scoop before it hit the wall. http://www.gtpracing.com</TD></TR></TABLE>

Wow that's nuts...

Is a cowl setup better than a ram air?

Not that I could drive down the street in a honda with a cowl hood I would be chased down by a bunch of camaros and forced to put a V8 in there hehe

 

It's funny that you said camaro that were we got the scoop from.

 

harwood hood?

damn i shouldn't even know about that company. jk...my old boss ran super gas in his 69 camaro. 9.90 brackets

 

Woohoo my brother got the go ahead to create me a ram air setup for the ITBs in his welding fabrication class at college

So we are going to design a dual purpose airbox. It will be 3 pieces. One piece is the basic flange that goes between the horns and the ITBs and basically creates an oval like the TWM Airbox seen here:


THen, we make two interchangeable pieces....one is a plenum with a 3" side intake like the twm airbox (bigger than 3"?). The second one will be a ram air conneciton going up out of the hood that is designed to have a rectangular K&N filter slotted right in there and closed up.

What do you think of that? So bascially depending on how I feel about it I can run ram air or an intake design, and it will be really easy to swap, we have designed a sort of u-ring that will slide across and joing both pieces.

If what JDogg is saying works I can run map sensors on both those setups to help with barometric pressure and adjust the fuel maps.

 

when you are making progress let me know. i want to make one too. i have a set of twm's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmDXrex &raquo;</TD></TR><TR><TD CLASS="quote">

wouldnt that defeat the purpose of ITB's? </TD></TR></TABLE>


damn mike, thought you would know more about itb's why do you think that would hurt it?

 

what about having a scoop on the front on a k-series... directly into the itb's, would that work out?

 

makes it even easier

 

that is perfect for an all motor daily driver and a track car as well if they want ITBs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by meanEG &raquo;</TD></TR><TR><TD CLASS="quote">when you are making progress let me know. i want to make one too. i have a set of twm's</TD></TR></TABLE>

Here's a quick drawing of what I'm planning, we're getting measurements this weekend and going to start building it in CAD. I don't know about the ram air design, I couldn't draw it very easily in 2D, I'm not sure if it's even the right design

 

This is merely an idea:

If at all possible, try to develope the box having a larger diameter in the middle and smaller at the ends. Sort of like the J's racing intake design. Or an even better example would be the ram air manifolds on the TODA engines.

This is just an idea, if its totally stupid feel free to say so, I wont mind.