An
excellent shot of the '01 R8's nose diffuser, shot at Mosport 2001.
It is changed somewhat from '00.
There appears to be more kick-up to the outer diffuser sections next to
the wheels. Also, the strake in the outer section has moved closer
to the front wheel and its orientation is more parallel with the car.
Note the lower A-arms are running in the diffuser area.
Note
the center diffuser strake leading edges are angled in-board to the centerline
as on the 2000 car. 
The
2001 Champion Audi's front diffuser, photographed at Mosport 2002.