Walter, if you still have your '93 300D, you might want to check out
this thread... it has details on how you can disable the EGR without losing boost, by converting the actuator to a pressure-type unit.
Doc D, I'd love to hear more about this "melted down" motor. Sounds a lot like an old wive's tale to me. The mechanical IP's aren't capabale of pushing enough fuel to cause a meltdown, even with excess boost, except under the most extreme, bizarre circumstances...
