For what it's worth, I've got a power Commander on the way. Since I'm pulling off the airbox anyway, I'll plug the valves completely when I do. The marble was a quick and easy option, but if you're going to tear into it, why not finish it all the way?
2008 Passion Red Ninja 250 - Sold!
2009 Plasti-dip black ER-6N - Sold!