I've been hearing a scraping noise since yesterday so I look under my car and the underbody plastic piece has detach on the front of my body kit can i remove it and if I do well it mess with anything esle. Another question has anyone had problems with the body kit detaching from the car. Any solutions? Pictures well come if needed as well.

 

The plastic piece can be removed. It's function is to improve aerodynamics, keep water and road debris off the engine, improve engine cooling.

The car will be OK without it but it does serve a purpose.

Might also ask at the Toyotanation website about the body kit issue.