Yes, there are lots of resources here and around.
Here is Pelican's tech article for dwell and timing:
Pelican Tech Article
This is considered kind of the D-Jet "bible" for troubleshooting (at least I know I've referenced it dozens of times):
D-Jetronic Parts and Troubleshooting.
Another good reference from Anders on idle:
D-Jetronic Idle Stability
Good luck!