My head is in the clouds recently thinking about turbo upgrades for my RX7. I've found a neat site that uses GNUPlot to compare dyno sheets but unfortunately these aren't transient plots, so they only tell half the story. What I really want in addition to this is a plot that shows torque as a function of time at various RPM points. This will show the all-important throttle response factor which I believe is paramount for driving when you don't already know the course. (read: on the street.)