[mr0077]

As I understand it, the PCV system needs a filtered source of air (air cleaner housing, filtered breather, etc.), but I don't think you could have too much...it would be like a vacuum secondary, only the air flow that's is needed gets used. Also, if you have more blowby than the PCV can suck out at WOT, the breathers will let it vent without building up pressure in the crank case. I would recommend having the breather on one valve cover and the PCV valve on the other for a sort of flow-thru system (in one side, out the other).