so getting the stock is good to have, but you have to check if the map on top the intake manifold that is the difference if you can roll back to stock with a 2 bar. some upgrades are 2.5 bar or 3 bar map sensors. if they load stock the car will stall or run real shaky and rough.
its a torx screw 1 of them that hold it down.
@Junkyard_Mad-Scientist posted a picture markup to help you find the map. sensor. maybe he can repost it here. get the part number and lookup if it's 3 bar.
to run stock they need to put back a 2 bar. I would use Gearbead or reach out to Brad at AJP turbo... search these threads for his email. Matt at GH is a veteran as well.
you have a windows laptop or want to run android or iOS get a license for Forscan and gather info to learn more about the car. they list suggested obd2 connectors to interface with the car.