Thanks to mickeykelley for jogging my memory with his other thread on the PCV system. Made me recall this: https://oppositelock.kinja.com/ditch-that-pcv-system-before-it-is-too-late-1634156554 This is one of the best automotive articles I've ever read and it clarified to me what the modern/factory PCV system does and why it is actually not optimal for performance. The solution in a nutshell is to divert the blow-by not back into the engine, but into a catch can. I may not be tuning my Dauntless for maximum power and performance but I am however in general agreement with the author who says he's in favor of any enthusiast using a catch can regardless of how much or how little horsepower their car has. I too want to see how much blow-by is collected after 3,000 miles or so. Great comments on the article too, no idiots. Kinda of fleshes out the article in greater detail. Load them all and be sure to toggle between Staff/Community.