You don't want SM guys tuning a forced induction car, period.
AFAIK, myself and Cueball1 are capable MS tuners, and can guide you through any of your tuning questions, assuming (hopefully) you're using a MS.
In your area, Jeff_Ciesielski and Wayne_Curr have both built and megasquirted turbo miatas along with some other vehicles, jeff quite a few turbo'd miatas, and would love to get a little cash for driving around in your car.