Have you reset the ecu after switching all the wires around for the test? I am unsure why you would be getting both the low/high readings. You could try removing the MAP and spraying a little carb cleaner in the TB passage. It may be a little restricted.

Do you have access to a multi-meter? Then you would be able to read what the TPS is saying. I could advise more if I knew the voltage coming from the sensors.