Originally posted by svt490:
I thought that when you do a dyno run you are supposed to do the pull in 4th gear, why in the first video are they running the cars through the gears? those cars sure do jump around on the dyno when the shift.

You normally do do a dyno run in 4th as that is the gear in most cars that equals 1:1 ratio with the tranny and tires. But you usually have to start in first and then shift your way to 4th before the run starts as I doubt there are many cars that can just start in 4th.