Originally Posted by
shovelhd
In general, for a given effort, outdoor numbers will be higher than trainer numbers. Comparing numbers between devices is not usually accurate. Your fitness has probably changed as well. Go with what your Quarq is telling you and track changes, not ewang.
Through some further research, and being naive, I did not zero-offset the device. Not sure the impact on my Quarq's readings, but I will do it tomorrow for the crit I am racing in, and see if the power numbers are closer to the indoor trainer.