Most of the discussion here centers around the 617 but I'd like to learn more about the 606 as I'm sure this engine will begin to get more attention as well in the near future as the 210's become more affordable.

Just some general musings:

It's my understanding from other discussions that the stock 606 pump has little or no performance potential beyond what can be gained by adding a chip to the computer. True or not? Are there larger elements than can be fitted to these pumps? What "model" is a 606 pump? I see M and MW being thrown around in reference to 617 pumps but does the 606 have a designation?

I've also heard that a 603 pump can be fitted to the 606 for more performance. This would make it mechanical however and I need to keep my computer control to be OBDII compliant. What is the designation of a 603 pump?

Electronically, what are the parameters controlled on the 606 pump? I'm assuming timing and fuel. What is the control signal structure of the computer when it's controlling the pump? Square waves? Variable duration and rate?

Do all pumps have a standard mounting face? How about the drive shaft? Is there a standard mount to the drive gear? Has anyone considered mounting a Bosch pump from a Cummins Diesel for more fuel?

Sorry if this is disorganized... I'm just brainstorming...

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250