OP, look into DSMLINK or Eprom chip tuning .
I think Keydiver is still around if you just want to get a base chip burned
or you can burn your own chips if you get the program and chip burner and rewriteable chips that you need... Its funner diong it yourself,
but you havent really stated any goals for your car.

If your just running a stock turbo at under 20psi boost levels then keep the safc. You just wont get the 2step or NLTS or other handy options.