Does the GT/CS rear fascia with the little diffuser thingies at the bottom cut down on the amount of crud that collects at the rear of the car at all? With my standard GT the back of the car, from the spoiler down, even on dry roads gets covered in dust and other road grime long before the rest of the car. I though maybe the diffuser might make a difference.

 

Honestly I don't think so when any highway travel is involved & I get to a stop look out back and the area from the plate upward to the deck lid still gets rather dirty.
If I remember I'll take a picture next time and stick it hear

 

No...not really...my car is black, and after I wash it...that is still the first area to get dirty!!!

 

+1 - seems to get just as dirty / just as fast.

 

this seems to be the first part of the car to get dirty on mine

 

Nope , Sorry,

Still collects dust/dirt on the rear valance bumper area.

TDS