Few choices out there, you could go Alcatek, Syvecs, ECUtek, Link, or Simtek just as a few suggestions...
I will have a Bug STi ECU + uprated MAP Sensor up for sale on the 20th October as I am fitting a Simtek Pro ECU & Perrin 4-Bar
My ECU was previously mapped by Duncan, then Richard @ FB Tuning, and lastly by Martyn Jeffery @ EngineTuner.
Ryan