Put simply: Horse power = torque / second.

Ideally you want to be at peak torque coming out of a turn and be at peak horsepower going down a straight.

For best performance you want to always be above peak torque. I always shift at roughly peak horsepower +500 rpm. That way after I shift I'm still above peak torque. Its a decent rule of thumb.

I prefer my shift points to be right after I've exited a turn. I think that gives me the best accleration through the turn and a better starting speed for the straight.

MMiskoe,

I'm not sure what you are saying in your second paragraph, so if my response doesn't help at all perhaps you could try to state it differently.

Are you saying that you shift at specific points on track with both gearing? If so, don't do that. Shift based on your engine, not track location.