so from the very lenghty version of how to "double clutch" why would you not just keep your foot in the throttle and slam it down, it'll still match your RPM's up and save you those precious milli-seconds for the "go to neutral let it out and then blip the throtle and shift to the next gear" ........to me just staying in the gas like your powershifting seems to suffice for RPM matching if your quick enough.....