Still looking for some ideas...

• I am using a Snap-on MT2500 scanner in Generic Mode (No German Cartridge)
• No Codes, but that does not mean there are no codes set on the MB side...
• Spark is good
• Fuel Pressure is Good
• Visually and tug tested grouds and checked for power to the ECM at the ECM connector.
• CMP and TDC sensores are new and have been checked for resistance from the ECM plug.
• ECM has been changed with used unit.
• Battery in excellent condition.

I am at wits end on this one, been advised by 2 local German Car Gurus, but they to are sharing my confusion.

Any help is greatly appreciated.