A while back I set my FTP at 260. I thought it was accurate. I used my average watts from two 1-hour efforts in the real world. One was a time trial where I had a finishing time of 63 minutes. My average power was 256 watts. The other was just a hard 1-hour solo ride - averaged 263 watts.
But, either I’ve lost fitness or it’s just different in Zwift land. I’d like to go back to Zwift’s estimates of my FTP based on their 20 minute sample.
How can I go back - without manually inputting my FTP?