Since the Toyota uses an ISo protocol that operates at 10400 Baud going to a much higher speed does not really buy much as the car bus is the bottle neck and not the speed of the communication between the scantool and the PC. What you are seeing demonstrates that in some cases the high speed is just a hype, now the speed does come in handy for protocols such as CAN but not for the other protocols.
Paul
www.obdpros.com