Cade, the issue is the type of turbo set-up used in the early cars.
In the beginning, no one knew much about using a turbo, so they just bolted on a turbocharger, but they made a mistake. The "conventional approach" is used by Chrysler only beginning in 1988 with what is called a "blow-thru" design, but the early turbo cars had a "suck-thru" design. The problem is that the throttle body is in the wrong place.
It should control the flow of air into the motor after the turbocharger (and the intercooler). In the suck-thru design there is no way to throttle the motor is there is a "leak" somewhere after the throttle body. Without an intercooler, most of the early motors work very well, but a "leak" can cause the motor to suck in too much air at atmospheric pressure, or worse, at boosted pressure. This can cause run away rpm. The factory realized the mistake after a couple of years and changed the set-up. Carroll Shelby had a factory in California called the Skunkworks where he produced the turbo cars in 1987 and the Chrysler tech guys followed his example.
So, most enthusiasts change the early turbo cars to the blow-thru design. This is called a turbo i to turbo II conversion, but it means changing a lot of parts, including the intake manifold, throttle body, and the ECU.