Felt AWESOME yesterday evening. Absolutely flying (relatively). A normal tempo ride for me averages around 155-160 with stop signs and lights and stuff. My FTP is around 220. Yesterday I averaged 180 for an hour, second half was like 185. NP was around 210, but all steady state except for a few climbs around 300-350. I felt like I could roll along at 230-240 without too much trouble, felt real nice.
I'm guessing it's just having a good week, followed by a week off for sickness and rest, and then it was also cool and fall like last night.