As you probably know, Texas inspections of ODB2 car require a scan of the port to show no codes. With a full ECU in a car, the port is still there, but they can't get a signal from it. In the past, the law allowed for the car to take the roller/sniffer test if they could not get a signal. This is how these cars were able to still pass inspection. In the last year, the law was changed and the roller/sniffer test is no longer an option. If you don't have an active functioning ODB2 port free of codes, you don't pass. There are a few people on this board who now have parked FM2 cars, and a few others (I suspect) that had to grease palms to have their inspector plug the scanner into a second car during the inspection.