Originally posted by DemonSVT:
Leave it on!
Part of the reason it is there is to channel under car air past the engine bay so it does NOT lift the front end of the car up at high speeds!

What am I a F1 racer?

Well I doubt we'd even notice a difference in lift..
And Brad's heat shield might work on an open element air filter but Im pretty sure he doesnt have anything for a Cold Air Intake.