Air flows: Street Dominator & Edelbrock RPM

I'm a little surprised that the SD did that well but not shocked. A single plane will usually pull away on the top end. On the street the dual plane is almost always the winner. I've tried that test a bunch of times and whenever I change back to the dual plane intake I can feel the extra punch getting across the intersection. They do run out of steam earlier and at the drag strip the dual plane usually lays over in top gear, but on the street they really provide some extra kick.