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Why don't homemade CAI work?

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Old May 6, 2003 | 06:55 PM
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From: Heaven Scent
Default Why don't homemade CAI work?

so why does $50,000 in research and development make a superior product? its basically the same product if u make one urself... im thinking about removing my resonator and putting a pipe thru the front grills...
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Old May 6, 2003 | 07:01 PM
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Default Re: Why don't homemade CAI work? (d8168055)

I took out the resonator..cut it up, and have just the tube sticking into the stock air box. It pulls air from the bumper area. Ya know what..imhappy, lol
Since i have a hondata gasket, its pointless if i was drawing hot air, so the combination works well. i doubt ill be getting an after market intake any time soon.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d8168055 &raquo;</TD></TR><TR><TD CLASS="quote">so why does $50,000 in research and development make a superior product? its basically the same product if u make one urself... im thinking about removing my resonator and putting a pipe thru the front grills...</TD></TR></TABLE>
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Old May 7, 2003 | 08:09 AM
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From: Heaven Scent
Default Re: Why don't homemade CAI work? (ragejed)

"spoon does it on their race car"
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Old May 7, 2003 | 08:12 AM
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Default Re: Why don't homemade CAI work? (d8168055)

No one said it didn't work. I'm sure it would bring forward some noticeable gains. There are plenty of people I know who wish they would have gone this route. It's cheap and simple.
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Old May 7, 2003 | 08:15 AM
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Default Re: Why don't homemade CAI work? (d8168055)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d8168055 &raquo;</TD></TR><TR><TD CLASS="quote">so why does $50,000 in research and development make a superior product? its basically the same product if u make one urself... im thinking about removing my resonator and putting a pipe thru the front grills...</TD></TR></TABLE>

I would not discount the fact that the r&d($) is infact useful. There is a certain amount of theory involved(specifically regarding airflow), and without testing/changing, progress can't be made.
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Old May 7, 2003 | 08:57 AM
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Default Re: Why don't homemade CAI work? (d8168055)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d8168055 &raquo;</TD></TR><TR><TD CLASS="quote">"spoon does it on their race car"</TD></TR></TABLE>

They have to keep the stock airbox as per race regulations.

They also keep the stock 96 Spec exhaust manifold, but that does not mean it works the best.
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Old May 7, 2003 | 12:17 PM
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Default Re: Why don't homemade CAI work? (Reid)

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

They have to keep the stock airbox as per race regulations.

They also keep the stock 96 Spec exhaust manifold, but that does not mean it works the best.</TD></TR></TABLE>

But it`s a cheap solution for a small problem, wouldn`t you agree ?

Is it the same regulation that forced Spoon to let the outlet of their throttle body untouched ?
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Old May 7, 2003 | 12:24 PM
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Default Re: Why don't homemade CAI work? (ITR1858)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR1858 &raquo;</TD></TR><TR><TD CLASS="quote">But it`s a cheap solution for a small problem, wouldn`t you agree ? </TD></TR></TABLE>

I never said that intakes were a worthwhile modification (I personally use a stock airbox with a foam filter).

I was just commenting on the fact that one must take into account all factors before coming to the conclusion that "Company X" does this because this is what they find works best.
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Old May 7, 2003 | 12:28 PM
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Default Re: Why don't homemade CAI work? (ITR1858)

I know Ashai has dynoed resonator and no resonator and it has always showed a loss of power w/o it. 5-6whp or more I believe on ITR.
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Old May 7, 2003 | 12:43 PM
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Default Re: Why don't homemade CAI work? (Jetydosa)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jetydosa &raquo;</TD></TR><TR><TD CLASS="quote">I know Ashai has dynoed resonator and no resonator and it has always showed a loss of power w/o it. 5-6whp or more I believe on ITR.</TD></TR></TABLE>

I keep hearing about this test, but nobody says whether or not he left the stock plastic pipe that comes out of the airbox into the resonator inplace... I did this for mine, and it "feels" stronger, and sounds better than it ever did with the resonator in place (but we all know how accurate the butt dyno is ). I also have a cold air duct directing cool air towards the intake pipe (which feeds the airbox - just like an icebox):

I have since removed the dryer ducting, and simply left the duct in place because it seemed to really kill throttle response. Plus daily driving was making the airbox REALLY dirty, from just a few days of commuting.

Foam Comptech filter + Stock airbox + plastic pipe (liberated from resonator) + cold air duct in bumper is my current setup.

We also cut the stock pipe that feeds the airbox, and reattached the funnell facing forward, so it works just like an icebox...

DIY =
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Old May 7, 2003 | 12:49 PM
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Default Re: Why don't homemade CAI work? (Philly_NBP_R)

There was a thread about this awhile back and someone took out there resonator and dyno'ed the car. IT LOST 2 horsepower. So there you go leave the sucker in or spend the money on an intake.
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Old May 7, 2003 | 12:49 PM
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Default Re: Why don't homemade CAI work? (Jetydosa)

WOW, that is a considerable amount of power.

That much power was lost by removing the resonator? THat and the oem airbox are all that I still have from my stolen R, maybe I should try it out mysel. (i'm hoping to do some baseline runs very soon...)
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Old May 7, 2003 | 12:53 PM
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Default Re: Why don't homemade CAI work? (apexii)

I find it hard to believe that the convoluted mess that is the stock resonator flows better than a well designed DIY icebox (like mine )
I guess I need to go to the dyno.
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Old May 7, 2003 | 07:16 PM
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From: Heaven Scent
Default Re: Why don't homemade CAI work? (Philly_NBP_R)

yea, espeically that the stock air box is passivly suckin air, while a icebox intake is getting air rammed into it...
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Old May 7, 2003 | 08:14 PM
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Default Re: Why don't homemade CAI work? (d8168055)

You can't see the actual gains from a "ram air" setup on a dyno with a fan blowing air on it. While the "ram air" setups that some of us have on our cars may not be as functional as a camaro ss or a trans am ram air, I definitely believe that they make a difference. They just need to be on the road to feel the actual effects.
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Old May 7, 2003 | 08:21 PM
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Default Re: Why don't homemade CAI work? (Philly_NBP_R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Philly_NBP_R &raquo;</TD></TR><TR><TD CLASS="quote">I find it hard to believe that the convoluted mess that is the stock resonator flows better than a well designed DIY icebox</TD></TR></TABLE>

philly, i did the exact same thing (less the bumper duct) and i have to say it definitely helped the car. it is a rudimentary version of an icebox so i don't see how it possibly can hurt power output. i can only guess the person who removed the resonator and lost power didn't break open the milk jug and use the airbox to fender well tube, thus he sucked hot air into through the bottom of the airbox.
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Old May 7, 2003 | 08:25 PM
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Default Re: Why don't homemade CAI work? (magic hat #9)

the r cold air = decent enough.

imho if youre really this petty about a intake to spend a few hundred....

might as well get a interfooler.
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Old May 7, 2003 | 08:28 PM
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Default Re: Why don't homemade CAI work? (Soup ****)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soup **** &raquo;</TD></TR><TR><TD CLASS="quote">imho if youre really this petty about a intake to spend a few hundred....</TD></TR></TABLE>

never can stop being an *******, eh? you suck at pool too!
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Old May 7, 2003 | 11:21 PM
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Default Re: Why don't homemade CAI work? (magic hat #9)

I wonder if the loss that you get when just use the stock airbox without the resonator comes from the intake sucking in hot air from the engine bay. Maybe the dryer ducting gives colder air, giving you back the 5-6hp. Has anyone every dyno'd this?
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