I have done some research and cannot narrow down my specific issue. My current TBI stock set up is idling a little bit off and throttle response, at least in park, has lag. I checked the TPS sensor voltage at idle and its around 1.16v, non adjustable type TPS. I pulled the TPS off the throttle body with the harness plugged in and TPS voltage does not drop. I can open it all the way and get it to about 4.5v as it should. So, I purchased a new TPS and installed that one to the harness and tested. Well, although the volts are lower at idle or closed setting, it still sits at .93v. At this point I am not sure if I have 2 bad TPS sensors, possible but not likely, or something else I am missing. The process used to test the TPS is with DVM on the 20 VDC setting probing wire A and grounding wire B. Wire C has constant 5 volts with key on as it should. I am not looking to keep buying sensors, but there is definitely something going on with the TPS here.

 

The TPS voltage when fully closed is always higher than 0.5v. A value of 1.1v even 1.25v is generally acceptable, as most ECU have a way of referencing the startup value as its zero point. In other words, a tps is not a map sensor, it does not have an absolute pressure reference inside it, (absolute zero voltage point for the tps would be similitude) which I think is your misunderstanding

So both of those TPS sound good condition.
What i recommend is find the ECU wire which is the return current for the TPS value voltage, 1.12v at idle, 4.5v~ at wide open, this telling the ECU current TPS position.
You can measure the input going into the ECU at the ECU to confirm the ECU really does 'SEE' The tps voltage input.

From there once you think the voltage is going in, the next step would be some kind of data-logging real-time logging to confirm the ECU can actually report the TPS value, so you know the circuit in the ECU is not damaged to sense the TPS wire. But this whole part may not be an option so,

from here i would recommend checking fuel pressure with a mechanical pressure gauge that you own. Do not rent a gauge. The fuel pressure is critical in the transition of engine load, it must not drop. If you find the fuel pressure dropping perhaps the fuel filters are clogging or pump is weak. A 'weak' pump is very unlikely in general but if its an aged ancient OEM low pressure tbi pump I suppose its more possible than usual, Basically I'd be looking for some fuel flow issue or a continuity error in one of the sensor wires