Presuming you are talking about the electronic throttle actuators--I may like to buy your old cores. What year? What did you have to pay for the new ones and from whom?

Error codes will remain in the memory of the system, and it MAY remain in the LIMP mode. Try it and see--it MAY work just fine. If the ETA's were the only issue it should work OK.

If the ARS light stays on and limp mode remains on, have to reset the bugger.