When I am on the turbo trainer the Power output from the Vector 2 pedals on my bike is much lower than that of the built in power meter on the turbo trainer.
For example the last ride I did the average power output was 157 Watt as per the Vector 2 pedals and 208 Watt according to the turbo trainer.
If anything I would have expected the Turbo Trainer power average to be lower as that takes into account the losses through the drive-train whilst the pedals do not.
Why is this and how can I calibrate the Pedal Power to match that of the Turbo Trainer?