Originally Posted by Nutro
Damn I didn't realize the ZL-1 ducts were useless. I just installed them when I installed the front bumper. Oh well.
The ZL1 ducts are not useless as they do still direct air to the back side of the hub and brake area at speed and a temp prob can confirm this.
The fog lamp or daytime running lamp is a hotter and more turbulent area to pick up air. It is not advisable to use that are to feed the ducts. The best air is the spot used above on the outsides of the lower grille a la ZL1 area.