I'm currently collecting all the parts I need for my vrs. On the list is the oil catch tank, I currently have the elephant mod with it venting to atmosphere.

Now the more I think about it and look into it the more I want to leave it how it is!

My thoughts....

- The crank case vent pushes oil/gasses/vapours out of the hole on the rocker cover

- The hole on the tip (turbo intake pipe) were it's ment to go has suction, and quite a lot of it. This is why people are getting air filters sucked into the pipe.

Now.... If the catch tank does it's job and catches some oil, if you happen to drive flat out the pressure pushing out the ccv will be high and suction into the tip will be high giving it a high chance of sucking up the oil and doing damage.

The other Idea is to not direct it back into the tip and blank it off, then add a small filter to the catch tank. This is also bad in my eyes as it's designed as stated above to have suction... Not restrictions!

Dude, ALL racing cars use oil catch cans so that they don't drop oil on the track, catch cans vent to atmosphere via a filter but are designed to condense the oil vapour in the can so no oil vapour is vented, the spare hole on the TIP should be blanked off. A vacuum is as undesirable in a crankcase as high pressure, they both drastically increase parasitic loss, the crankcase must be allowed to breathe in as well as out.

Get a separator, not just a empty catch can.

There is no oil in the tip on mine, running a Michi separator.

Race cars/engines don't run a vacuum draw on a catch can as the oil gets so hot any moisture gets evaporated,and they change the oil more often anyway.