Will the Carbon spoilers that I see everywhere help keep the back of my car clean? It is PW and always has a dirty ___. Wait, thats the wife. Seriously , I know it is because of the air flow over a square ended vehicle. Will the spoiler help deflect the airflow downward to help blow the dirt off?

Dont think so.....if the spolier is doing anything, the "recoil" wind wouldn't touch the rear.

I have a PW with the factory spoiler, and no, it doesnt help. Everyone has a "dirty" ___, the design of the box isnt exactly aerodynamic, therefore trapping everything it comes into contact with. Oh well, be glad you got white, at least it wont have swirl marks all over it..