I've got a TTS and have the TPS ramp map set to 0.
My buddy has the same cams, but with a PCV. Tuned the same day, same dyno, same operator. Within 1-2hp/tq of each other.
I *much* prefer the feel of the standard map on his bike to the 0 map on my bike. Small throttle openings are so much smoother. You don't snap your neck with a fistful of throttle when going over a bump. Also, his bike feels a bit crisper on the bottom end.
I think what is happening on mine is that it's getting too much fuel too quickly, and that the Harley engineers did figure out partial-throttle fueling pretty well.
Just my opinion, based on personal experience.
The other thing that absolutely SUCKS about TBW bikes is there's no "stiction" in the throttle. At least with a throttle cable, there's a nice spot where you're not putting any pressure on your wrist holding the throttle open. The slight amount of drag on the cables helps hold your throttle position.
If I didn't have cruise control, I'd have a MAJOR case of carpal tunnel syndrome. I have to focus way to much on holding the throttle position. At least the PM grips helped.
I miss that aspect of my carburated '04.