[DarkPira7e]

Are you sure it's not because they are using the evap solenoid for your ebcs? They are supposed to disable the code. fuel mileage might be terrible because of tuning if it's still a work in progress / you're ripping on it more. With larger injectors, any time you're not at 1 lambda it's going to be straight up dumping fuel. Could definitely be something with the fuel system though. I would park over cardboard for a while

Also, check the evap solenoid under the intake manifold, those certainly need to be clamped if you've got boost. Old threads seem to find resolution by re-seating the in cabin gas tank cover, even if you've checked that, maybe give it another once-over?