Rode my FXSTC yesterday, 31 degrees, coughed and sputtered, slow in picking up speed on the Superslab....thinking it was the cold....still spitting and sputtering after riding ~20 miles at 70 mph....was thinking of performance modifications this winter, but how can you "dial it in" after doing modifications if cold has such a effect....What temperature does it need to be know "whatcha got" ? What about humidity? Have rode in the early morn to work when air "heavy" with moisture.....Seems like everyone uses wintertime as time to tear-down/build-up....so what's up? RKC03