08-21-2007, 08:46 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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Not Ranked
I honestly don't believe there is really much of a performance impact between the two. But if you put environmental concerns aside, an "open" system is a bit simpler. FWIW, I run an open system on my FE. Regardless of whether you choose open or closed, a PCV system is good for your engine.
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