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?

http://img502.imageshack.us/img502/2...rengineqg5.jpg

RE: Who wants the nipple?
 

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.

RE: Who wants the nipple?
 

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..

RE: Who wants the nipple?
 

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.

RE: Who wants the nipple?
 

you are correct

RE: Who wants the nipple?
 

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RE: Who wants the nipple?
 

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.

RE: Who wants the nipple?
 

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

RE: Who wants the nipple?
 

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.

RE: Who wants the nipple?
 

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.