The idea uses common sense but I think I noticed a difference when I took out my blocking plates. One day I thought about it and took out the one above my intake and the scoop one too. My Cobb cold air is on the way and I was bored. I might be imagining things but it seems to have better throttle response. Now I have to remember to put them back on when it rains. Just thought I would post because it seems like a logical thing to do. Any one else notice any difference?