when i got my oil catch can installed by MMS it was installed as JOEY has described at that stage i was running Standard managment... i was told that the crank didnt need to be connected until it was tuned... i was told that if it was connected the car would run very rough. whats the verdict? (just wanting to know for future reference as i dont have the car anymore)

i am gona have one pipe for the cam covers (they join together factory) and gona do the crank too. DO i just take of the line going to the inlet manifold and send that to the catch can and block of the line from manifold? and obviously block the line going to intake pipe too.
So for this i will need 2 inlets and a breather or 3 inlets (one going back to intake pipe)

It shouldnt run rough if you block the PCV valve.

Most of the oil vapour comes from the crank case so only connecting the cam cover lines is almost pointless.

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RS Liberty - Because WRX's are only good for parts...