Who wants the nipple?

I recently bought a new Ebay intake, with a single nipple. The intake works great, but I didn''t notice that there were two hoses that connected to the old intake. As you can see in the picture, the blue hose is attached and the red is open. I noticed that when I revved my engine the blue hose had suction to it. Since it had the suction, I figured to attach it to the nipple. If you follow the blue hose down through the pictures, it seems to go into a black cylinder and then go into the block. The red hose is just inches from the PCV valve, I''d guess it be ventilation?

Well it would be poor design to just have an open hose leading into the intake manifold. Unfiltered air can get into the engine that way. I would guess its some sort of vacume hose, check in your owners manual, or haynes manual to find out what it goes to.

im guessing its the Exhaust Gas Recirculation (EGR) system

i''ve looked at my haynes manual and it i found that the EGR  (if functioning correctly) has NO vacuum. so since you said that it doesnt have any vacuum then im guessing its the EGR system...

keep me posted on what ever else you find since we both have the same car, ok?...im also looking forward in installing an aftermaket intake system on mine..

Upon reading my own post, I realize I worded it weirdly. I am asking if I have it set up correctly. I have attached the blue hose to the intake, and left the red hose open. I figured that since the blue hose has suction when I give it gas, it needs to get filtered air.

you are correct 

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why not just buy a 75 cent T-fitting? vacuum is used for more than just getting filtered air, by the way. it likely controls the EGR, so right now you have NO egr.

What Kind of Kit is it?  Having open hoses can''t be good even if there isn''t any noticeable pressure.

Heh EGR is not that pig of a deal. Why do you want burnt exhaust being relocated to your intake? Please do explain what benefit that has for performance when hot air decreases power. EGR is for Emissions only. 

I can see the thought behind that but the only way to get a real answer is to put it through a test.  Run it both ways and compare gas and power numbers.  I personally don''t have time for such a game so if anyone tries it I would certainly like to be made aware of any effects it has, good or bad.

no EGR = worse MPG

At idle, EGR mixes exhaust gas so less fuel can be used and still result in a good AF mixture.  Exhaust gas has very little O2 left in it to change the mixture.  Less fresh air = less fresh fuel.

quote:

ORIGINAL: falkore24

no EGR = worse MPG

At idle, EGR mixes exhaust gas so less fuel can be used and still result in a good AF mixture.  Exhaust gas has very little O2 left in it to change the mixture.  Less fresh air = less fresh fuel.

 
 
So to keep the A/F ratio up the computer would have to dump more fuel in which may give you a more efficient burn with a detriment to MPG''s?

So, Hobbin, did you make any changes...hows this situation progressing?

quote:

ORIGINAL: gojuice

quote:

ORIGINAL: falkore24

no EGR = worse MPG

At idle, EGR mixes exhaust gas so less fuel can be used and still result in a good AF mixture.  Exhaust gas has very little O2 left in it to change the mixture.  Less fresh air = less fresh fuel.

So to keep the A/F ratio up the computer would have to dump more fuel in which may give you a more efficient burn with a detriment to MPG''''s?

If I understand correctly, you are asking about the situation with the EGR blocked off.  In this case, the engine will require more fuel for a good AF mixture because there is more fresh air comming in and thus more O2.

so then it would definitly lessen the mpg of the car?is my understanding right?

quote:

ORIGINAL: ford

so then it would definitly lessen the mpg of the car?is my understanding right?

 
 
and most likely raise cumbustion temp, a lot in some cases...

ok..so if i were to buy a intake system, i should find one that has 2 nipples then right?? so that both of the original hoses goes to the intake system again...

Bottom line: Hobbin and ford...both your 94s just need that "red" hose to be plugged. The aftermarket intake system only requires that the "blue" hose be connected to the nipple. Cutting and plugging that "red" hose is perfectly safe. So thus, the aftermarket intake system only has one nipple. Keep in mind the manufacturers (AEM, K&N, etc.) knew what they were doing when creating these intake systems.

Here''s my intake. It''s an eBay special, had to slightly modify for the sensor; but no MAF.

[image]http://i219.photobucket.com/albums/cc191/klrspz/03%20Accord/CAI01.jpg?t=1214156884[/image]

You can see my connections easily

It''s probably me, but I can''''t make heads or tails of your pictures.

quote:

ORIGINAL: Codonah

Bottom line: Hobbin and ford...both your 94s just need that "red" hose to be plugged. The aftermarket intake system only requires that the "blue" hose be connected to the nipple. Cutting and plugging that "red" hose is perfectly safe. So thus, the aftermarket intake system only has one nipple. Keep in mind the manufacturers (AEM, K&N, etc.) knew what they were doing when creating these intake systems.

If this is in fact the case, this step would be included in the installation instructions and the kit would include the plug.  All hoses should be accounted for in the installation of any intake.

quote:

ORIGINAL: falkore24

quote:

ORIGINAL: Codonah

Bottom line: Hobbin and ford...both your 94s just need that "red" hose to be plugged. The aftermarket intake system only requires that the "blue" hose be connected to the nipple. Cutting and plugging that "red" hose is perfectly safe. So thus, the aftermarket intake system only has one nipple. Keep in mind the manufacturers (AEM, K&N, etc.) knew what they were doing when creating these intake systems.

If this is in fact the case, this step would be included in the installation instructions and the kit would include the plug.  All hoses should be accounted for in the installation of any intake.

 
Yes Keep in mind, there would be a plug...