I snapped a picture of the F/N chart from Zex. Take it with a small grain of salt but I did a comparison based off the weight of my car (3450lbs) and ET (13.38w/o and 12.66 w spray) and came up with approximately 50HP gained when using pills 17F and 30N. One can assume that the other pill sizes would put you in the ball park of what they have shown.
** EDIT **
The picture below is for single throttle bodies.
** EDIT **
