CPS issue...maybe

[Sean Coriaty]

 I, too, thought about the possibility of a plugged cat.  Given it's running
rich, this seems a likely scenario.
Another possibility that crossed my mind was a bad or seized turbo, but
exhaust gasses should have by-passed turbo in that case.
Audi tech rep actually said they'd investigate the glowing exhaust manifold
after they "replace the CPS and get it started".
Sean