Can someone explain to me what the minimum idle airflow tables do. They are for all gears and go out to 7000 rpm on the LS7. What does 7000 rpm have to do with idle? And why is there a table for each gear? I'm having surging problems at low speeds with the mild cam I've installed, and I'm told that adjusting these table upwards will cure the surge. Before I make any changes, I would like to have some idea as to what I'm doing with these tables.