For mapping, you will want to contact "RR Racing" or "Tuned by Loi".
Both are in the US, RR will want your ECU sent to them or you will need to purchase a new ECU from them (tuned) or Loi will send you a handheld gizmo with remotely tune the car via software share.
I have looked into both, but for me, the cost far outweighs the negligible HP gains - each to their own however.