not sure what you mean by threshold, bud. only put mine back on the road yesterday, so it was hard to say when it starts building.

from driving yesterday, i'd say it starts building from 2.5k. i know if i throttle it with the revs held at 3k, its off like a stabbed rat

hope that helps, i really should pay more attention :S

i'll take it down the bypass tonight and see what it actually does

i'll take at look at my power charts for you an see what it was making at 3k on the rr, too