on the TTz from 0-100mph. The explanation I read on this indicated the gearing on the auto kept the turbos under boost longer than the manual, which due to the gear ratio spacing caused the turbos to fall off boost in between shifts. I believe the source indicated the 0-60 time was about 0.5 sec shorter for the auto than the manual, and a few 1/10's faster in the 1/4 mile. I'm skeptical on the 0-60 time difference as that measurement depends mainly on the launch, and IMO that the manual launches harder. But then again, I haven't driven the auto.