my outdoor bike with a pioneer power meter reads about 10% lower than my trainer data via a cycleops hammer (and than my old srm and an old powertap hub). at first i figured i'd just lower my threshold numbers in golden cheetah, but now as i'll be riding a bit more than 50% of my kilojoules indoors (i'm a teacher - going back to school), the trainer will have a larger effect on the training data. does anyone have a way he/she is happy with for rectifying the data? i don't think i can reset pioneer 'slope' to match the other power meters though i think if i try a few calibrations on the cycleops hammer i can get a lower power reading (my experience - usually the later into a ride i calibrate trainer, the lower the power)?
of course lower trainer power readings = a few beatdowns in the virtual zwift/rouvy worlds!