Skunk2 Intake Manifold

My state law states that I have to leave my stock air filter box intact
But I was to squeeze a bit more ponys out of my B16, so would I see any increase in power with a skunk2 intake manifold even if I have a stock air box?
But I was to squeeze a bit more ponys out of my B16, so would I see any increase in power with a skunk2 intake manifold even if I have a stock air box?