[Piotrsko]

Well look at it another way: your throttle plate is causing a huge restriction and flow in the system is limited by restrictions. Matters not part throttle because it can only flow what the throttle allows. If you used a variable system like the old strombergs it still wouldn't matter because the carb is still the choke point. It matters a lot when your throttle is wide open because then the restrictions determine maximum airflow. If you do diesel, it might matter but once again only at full demand.