Originally Posted by Bmwe5320023.0

Thanks for sharing, you're probably one of the most senior guys with this mod.
I wish someone had measured the actual pressure.
Could I ask you to put your hand over the oil cap and say how strong is the suction?

I'd love to leave this mod now that I've done it. I really don't want to pull the manifold to reinstall another CCV assembly.
I wish I had just installed a brand new CCV when I pulled the manifold last time.
I was fooled by people running catch cans and cursing the ccv system, so I naively believed that it was evil and wanted to get rid of it.

The issue with the suction is that I'm afraid it will pull on the oil seal too hard and bust it.
I have already ordered ac delco top engine cleaner, so that will clean and unstick the rings.

Now it's interesting that I've rear quite a lot of threads on this mod, maybe all of them, and lots of people said that it stopped oil consumption, so I do trust that.

It's also interesting that no one complained of the damaged seals. So either people it happened to were to embarrassed to post about it or maybe, truly, miraculously, no one ever had an issue.

I'm thinking of buying a vacuum gauge and testing the pressure, maybe I can find someone who has measured it for comparison. I wonder what's the safe limit.

On another note, I heard some people saying that with this mod, you get too much pressure, and your gaskets gets blown out. Kinda interesting, how do you get excessive pressure when you're having vacuum. Maybe something I don't get.

Now my opinion on catch cans, not directed towards you, they're complete junk.
First of all, it's too simple of a system to separate oil and vapors.
Like, while the blow by gases pass through the can, probably a very small portion will stay in there. It's only by gravity that some oil droplets will actually stay in the can, everything else will continue traveling into the manifold. So I think the catch can is just useless.
Actually I think it's worse than that. Especially in the winter, because of condensation the stupid thing gets filled up with mostly water all the time. That's why I think the oil catch can is the biggest gimmick...