Practice?! Practice what? Your car is driven up by Adrian and then he does the dyno run. I wouldn't trust even myself to drive the car up onto the dyno. You get 3 runs and he prints out the best one. I got 4 runs because I asked him to run to cutoff (no extra power made). Thing about dynos is that they are only a scientifically valid comparison to other cars who run on that same day. Run different days and you can get different results.

