What I'm asking is: would there really be a big diff if the guide started from the IC itself and went out 2-3" versus 6-8" meeting the cut-outs in the bumper. IMO, the air will make a decision whether or not to enter the bumper regardless if there is a guide sitting immediately behind it or inset further. Perhaps we can make the argument that ALL of the air entering the bumper @ that point would go through the IC.