if you pull it off, I had to take the bolts out of the drivers side of the crash bar and loosen pass side a little. On Veloster forum, they cut part of the shroud to slide out of the crash bar with a hack saw (maybe the guy didnt have a socket set?).
Here is a picture of our shroud and one of a optima, I think one like the optima would perform better because it will scoop more air into it. Also if you leave it off, I think I might make a "wall" to the right of the intercooler so the air will go through the intercooler, you will see with it off, most of the air will want to go around the intercooler now. Which if you have a CAI, it should get more air then as well.