Join Date: Nov 2013
Location: Millgrove, ON, Canada
Just my two cents...... it would be fun to experiment, BUT, I have a PCV on one of my other bikes, which it needs to solve a specific problem with lean fueling/surging. Those with more experience with a Wee could tell you if it has "problems" or not with the fuel map, but I gather these are far and few between.
Squeezing a couple of horsepower out of a bike like this gains you what? Poor fuel mileage for one, and not that you'd notice the horsepower (if in fact you gained any at all on this bike by PCV alone).
Maximizing fuel economy, is likely to cause you issues like running lean, surging or stumbling..... again, if there's no problem to begin with.....
The better option with older Wee's is likely an SV cam set, but with 2012+, aren't you already there?