2005 sti, i was underneath the car earlier and noticed the under tay covers down both sides of the car and the front one, all had some form of road crap in them, i.e small stones. If i remove them to clear them out, is it worth while putting them back on or are they pretty pointless items.

 

Some people leave them off but they're there for a purpose - to protect the underside of the engine as well as clean up the airflow under the car.

JohnD