DME Gone Bad?

[robnhod]

Short version:
96 318ti stick. Replaced head and battery. Start car and runs great. Next day car doesn't start, but can jumper starter and car runs good. Check engine light does not come on when first turn ignition, but bulp works. Disconnect battery and DME then reconnect. Turn ignition so the check engine light comes on. Start car then the light goes out like it is suppose to. All is good. Next day, car wont start via key/ignition and cluster works except for the check engine light.
I'm looking to put in a new DME, but could use some advice on acquiring what I'll need regarding delete chips, performance chip, cut wire to avoid EWS, etc.
If you can think of something I'm missing or want the long version, see next post.
Thanks for reading.