It is/should be located on the intake tube to the turbo, after the MAF. It connects to the breather hose that comes off the valve cover, right by the right side of the exhaust cam.

 

Ohhhhhhhhhhhhhhhh lol

Ok your talking about putting a breather on the intake pipe ! I was under the impression that the breather is put on valve cover and the intake rubber pipe is capped. I was referring to having the nipple capped and running a breather on the valve cover pcv that previously ran to the intake pipe....

I think this is why there is soo much confusion in this thread. People probably think that you are referring capping the intake pipe and running a breather on the valve cover pcv, just as I did. But you are 100% correct about putting a breather on the intake pipe behind the maf is a bad idea. I already new the how the lines run etc... but now I know what your talking about lol....

So then now that we are on the same page, would you agree that a breather on the valve cover would be ok as long as the intake pipe nipple behind the maf is plugged?

 

No he is talking about a breather filter on the valve cover, not the intake pipe.

breather filter on the valve cover will allow air in that is unmetered by the MAF if I am understanding him correctly.

 

Yes, this is correct.


BluEVOIX, I still think you're a little confused on how the PCV system works. I know it's a bit hard to explain if you can't visualize it, but if you reread what I wrote about the path that the airflow takes, it will become evident that the air is unmetered when you run the breather filter on the valve cover and have the intake pipe nipple capped (or missing) like in Buschur's pipe.

You have to remember that PCV only works during vacuum conditions in the IM. The airflow is being pulled in all the way from outside the stock air filter. This is how that airflow is accounted for by the MAF. Taking off the breather hose and replacing it with a breather filter (and capping off the intake nipple) now allows the PCV to function by drawing in air that is NOT accounted for by the MAF.

I will look for a diagram to help you visualize this and what I am referring to.


Eric

 

Eric,

This might work?

 

Bryan, yes that works. The diagram in the service manual is OK, but it would be great with arrows showing the air flow path. I will attach it here for reference anyway. But, for anyone trying to understand this concept, just remember that in stock form, with the breather hose, the air has to enter through the air filter and MAF, so it will be counted. Using a breather filter on the vavle cover now bypasses the MAF, so the air isn't counted.



Eric

 

lil-Rub,,,, the the hose is located behind the intake inlet,, if your standing in front of the car looking at youre intake system you will be looking behind the intake hose,,,, although the system you got you have a breather on your v-cover,,,, right ,,,yes i think so,,,,,,

the system is very basic how it works it takes all the blow-by ( bassiacally air that escapes from all that boost you are putting into the combustion chambers,,, it naturally leaks past the piston rings makes it down to the crak where the connecting rods are and at the end if youre valve cover vent is connected you end up with oil in your turbo system, intercooler system and into your intake manifold,,,,, thats bad .... i went back and foward with David Buschur and i learned from him ,,,, went to wally world/wallmart and bought some green lightning degreaser and cleanned my intercooler ....



the pic show what happends after a couple of miles of high boost and you v-cover vent hose connected to the intake,,,,,,,,,,

 

That's what catch cans are for. I think this was also mentioned in this thread a few times.

 

Thanks for the imput guys, but from what you all have posted I understand the PCV system since my first post. Here I drew some pictures of the "EVO" pcv system.

*note:* although I didnt lable it, the pcv running to the intake manifld has a check valve on our car.

**CLICK ON PICS TO ENLARGE**

STOCK


Breather on valve cover and intake pipe capped. (I think should not affect anything)


Breather on intake pipe after MAF <Bad Idea>

 

So basically what I was trying to say/referring to from all along is as follows:

Picture 1 = Stock system.
Picture 2 = Should be ok since intake pipe is capped meaning no unmetered air has/will enter (unless I'm wrong).
Picture 3 = Unmetered air going after the maf = bad (in which I agree with you guys on).

 

Picture 2 will draw in "unmetered" airflow through the breather port, and then through the PCV valve into the intake manifold in vacuum conditions. You're fuel trims will be bounce around assuming your still on a MAF based system.

 

Oh, ok after looking at it one more time I finally got it....

The reason picture 2 draws in unmetered air is because it is receiving air from the atmosphere instead of the stock system where it is receiving already metered air (intake pipe). I guess I wasnt thinking outside the box lol.

Thanks guys.

 

There you go. That's what I explained a few times. If you re-read what I wrote, you will see I was saying this all along. Sometimes it's just a bit hard to understand at first.

BTW, your pictures help out a lot when trying to explain it. If you had the MAF labeled, then it would be evident that in #2, the air is unmetered, since it doesn't come through the MAF anymore. #1 and #2 are what we were talking about here. I have never, ever seen someone do #3.


Eric

 

Yeah lol. I guess there are a few ways to read the same sentence.

I new how pcv's work but I kept thinking you were talking about picture 3 for some reason. As for picture 2 I thought that air was still being pulled in the manifold even stock and missed the point that the air into the manifold came metered from the intake pipe. But now I see what you mean...

Thanks for your help guys,

PS Your right I should have probably labeled the maf, but it sort of looks like it ...

 

Hey guys,
Im still quite confused as to what the best setup would be. I am planning on getting the Buschur Racing intake with the Mass Air Pipe. Should I purchase breather filter also? It seems as though everyone has there own opinion as to the best setup. Therefore I am totally confused with who to believe. Any input would be appreciated.
Thanks