Wrongo Bongo is just a saying, I was not refering to your name, Pardon me. The aerodynamic cover is under the car and both the top and bottom cover protect the engine bay from dirt, grime, debris etc... So, They are not crap panels, Lexus engineers have them in place for a reason. It was not my intent to aggrivate you. Enjoy your Lexus
The shield underneath the engine is for protection from the road hazards, the top portion is for a classic looking (with Lexus logo) to impress people.
Arodynamic? no, no, not at all.
I took the top of from my es300 (95) 7 years ago, at beginning I felt funny everytime I opened the hood, later, I dont even remember I had one.
Remember the Lexus commercial for the LS where they showed the airflow above AND under the car where they explained the aerodynamics of the underside of the car ? Yeah, That one, Well the under engine cover has alot to do with that. ;)