Turbo would be totally disengaged after 3 minutes or so in the race even though i would do full throttle. The software just didn't see the turbo anymore when i hit full throttle.
Even in the new version v200 it was the case with certain transmitters. I for one had the same issue with v200 as i had with all other versions. When i did the 90% epa, calibrating of the speedo to the transmitter and then bumped it to 100% it was gone and i got turbo for the whole race, not only for a few minutes.