does your engine compartment get dirty?
 

dirty and dusty? i'm asking is because mine does and i wonder if it's because maybe the intake tube is a little loose or something like that allowing dust/dirt to get in.

thanks.

anyone?

Yup, mine gets quite dusty, as does the engine compartment on my Z4.

All cars have this issue. The dryer the climate the worse it gets. I use Simple Green brand cleaner and rinse with water seams to clean good with out a film residue to prolong dust from sticking.