2g MAS Issues in a 1g...I think

[LaunchHard]

Car was sputtering randomly and now barley idles at all and misfires pretty badly and i am trying to narrow down the possibilities as to why. It feels like a sensor/ wiring due to the randomness, but i checked all harnesses and wires and found no issues.

Thought my MAS was goin out, so i got one to swap in for testing and it got the car to idle smoothly, which it was not doing before, but now has no throttle response. Wondering if there is a difference in 2g MAS's and/or what what cause the different symptoms when they are swapped.

Part #'s:
Original- E5T05171
Tester- E5T06071