I would assume you can if you adapt all the proper sensors and engine harness.
In your opinion should I continue down this path or would I spend a lot less time and money doing it a more traditional way with a stand alone type setup?
Do you know what ecu revision I should start out with? I have a stage 3 b5s4 but I dont want to fuck with my car that already runs great. (Unless its to improve the s4)