Was that the only thing that was done the safc? If everything is set on zero then no settings are changed. If it ran fine before i would set it all on zeros so it ran like it did before. You will have to go into the setup menu and set the options for your car. I dont have an safc but i have a apexi avcr and the unit is similar. The cylinder should be set on 4 and the throttle position arrow up and to the right.