With the pcv system in place I had lots of smoke in the "corners" so I installed the catch can as described in ChrissNJ's post and using Kuah's parts. Now the catch can fills faster than it can drain back into the engine and it still smokes like a diesel in the "corners". I have been black flagged several times due to excessive smoke. I'm at my wits end with this problem. If someone has another solution, I would love to hear it. Perhaps the Z32 is just not the car to track and I should buy a Jetta. Ha Ha! SEARCHING FOR SOLUTIONS...mayolives.