I have dynoed my car at DB on the dyno dynamics dyno and then less than a week later put my car up at MAP on their dynojet. The shootout mode is always within a few percent. On the 8/9's it seems to almost be spot on where as the X's it seems like its a few percent higher. My car made 500whp on the DD dyno then 570whp a week later at MAP. Shootout mode was like 582 or something. Pretty close, not perfect but close.