Anyone here use a chassis dyno to sort out thier cars?

I elected to not dyno my engine this time as it is basically a freshen up with a couple of small changes to the combo. However the weather has not been cooperating with getting it out and making some laps. The first race for me of the season is slowly creeping up and I would like to be ready to hit the ground running. made some other changes such as gearing and need a good idea where to start once we finally get out there. So the car has been sitting ready to rock. I would like to get it broken in and the fuel curve sorted out. Just wondering if this is a viable option or not? Any input?