I have been riding in hesparia Ca. The altitude is somewhere between 3500 and 4000 feet. I have t6 pipes, v force reeds, k & n clamp ons, with the toomey needles on the third slot, air screw is 1.5 turns, pilots are 30s, mains are 300s.
It has great bottom, but the top end dosent seem to be so strong.