[s-cars] Bad miss on S6 Avant

[rdeis at io.com]

Hi, all.  Yesterday I had to slam on my brakes for a sudden stop on the
freeway off ramp, and the car immediately started missing quite badly.

I stopped and checked for loose connectors on the injectors and firewall,
and found none.

It misses at idle, and all the way through the RPM range, and the exhaust
smells of sulfer like a struck match.

Cooincidence, or did I shake something loose?  What do I check?

Thanks!