the only thing that could really be gained from adjusting the TPS is throttle response. i dont think it effects the timing enough to make a difference in the rest of the powerband. the only thing it would do is either never see the WOT signal or get it too soon.
it would take alot of testing to find the right voltage that gives the best throttle response though. i know with my car its .989v and the range the factory gives is .8v to 1v.
unless somewhere it tells you the optimum voltage. then set it and be happy. haha