Anybody have a pictures of functional diffusers. I'd like to put a diffuser on my car that actually works.

 

The only one that probably has any actual testing would be MazdaSpeed. Course you have to actually be going quite fast for it to matter.

 

The FD would have to ride lower, and have a flat underbody to be very functional. On the street, you will gain little if any advantage.

 

In Orlando ?? Has Semoran Bvd(436), been repaved in the years I've been gone, cause unless you have a flat underbelly, and a smooth surface, the surface, and the underbelly cause enough turbulance, to keep the streets clean, that and the terrential downpours is why Orlando has very few street cleaning crews if any...