I have seen a lot of people mount them on the pass side between the pcv and the intake.I have also seen quite a few mounted on the drivers side between the rear of the valve cover to the air intake pipe.
Since i have the greddy twins which side would be better.I am leading to the drivers side as im seeing a very small trace of oil in the ic piping but none in the plenum.
Any help guys as im putting it in this sunday.

Thanks Keith.

 

Which catch can do you have???? There is a write on this board for the ARC catch can.

 

I'm trying to make the same decision as well. Talking with Quamen, I've pretty much decided to run one off of the PCV valve and over to the intake (pre s/c), and plug the line on the intake manifold. Then, I'll put a breather filter on the drivers side.

Thinking about it, when you go into boost, the PCV valve will be shut, and the only place blowby pressure can escape is the driver's side breather - so you will have some oil residue escaping there.

My planned setup should allow the intake to suck air through the catch can and out of the PCV valve at all times, even under boost, while the breather on the driver's side will always be sucking air in. At least that's the theory anyway.

EDIT: If there's any better way, I'm all ears! I couldn't find much info on this - seems like most everyone still has their PCV dumping directly back into their intake manifold (going through a catch can first).

 

Do both!

 

Got the greddy square one from sharif.

 

sharif has a niffty place he installs the greddy catch cans. give him pm.

 

the passenger is is most important. just use a breather filter on the driver side.

 

^ like I said above though, wouldn't that cause blowby pressure to be released from the driver's side under boost, if you still have the PCV going into the intake manifold? Keith also said that he is getting oil in his IC piping, which the passenger side catch can wouldn't do anything to fix.

 

That is why i was thinking of doing the driver side.
I rear thru a 100 pages or so and figuered it out...i hope.

 

So I guess my main question would be - what's the harm in plugging the PCV return on the intake manifold and moving it over to a pre-MAF, pre-boost location? Would that cause idle issues, since the only source of air for the engine is through the throttle? You think the ECU would be able to tune better, since all of the air is coming through the MAF then.

Sorry if these are total noob questions, or if they've been answered many times before, but I've been wondering this for a while now.

EDIT: Or maybe the pre-boost (ie. air filter on the Vortech) location wouldn't provide enough vacuum to effectively pull out blow by gases from the PCV?

 

I'd be down for both. When I had mine at first the driver's side, there was nothing in it ever. Now the other side, I had to drain it about every three weeks. But I had the DIY one that's pretty small compared to the Greddy. There's a thread here some where, been awhile since I've seen it. But it goes into depth and much arguement of what's best.