Has anyone changed thier sprockets for more low end tourque...if so, what was the result

yeah i went one down in the front it was a little bit of a noticeable difference it's not drastic like some ppl make it out to be but well worth doing.

Yeah, first went down a tooth in the front at the beginning of '03 season. Then toward the end of that summer I went up 2 teeth in the back. It's great on acceleration, but a little buzzy on the highway now.
Whatever gearing you pick, I highly recommend going to the 520 chain width. The weight savings is incredible and will definately liven up your ride.