I live in a state with mandatory emissions testing where they check for ready states via OBDII port. I've only ever seen them connect to the OBDII port, yet when I receive the emissions results, my VIN is printed on the sheet. Just wondering if there is VIN data in the ECU, and if there is, can it be remarried? How do those with transmission or engine swaps handle emissions testing if the ECU VIN doesn't match the chassis VIN? Thanks!