I've done this as well in the past few weeks. Capped them with the black chair leg caps...$2 at Lowes. Pulled the hose completely from the front one...for the back one, just pulled the intake side since the BOV side is hard to reach, and left the hose there.
I could hear it before with the Typhoon intake, but it's even more noticeable now, especially at lighter throttle. It's slightly louder, and maybe a little more raspy/higher pitched.