If I were to keep my stock ECU in my N/A s4 what are all of the electronic components that I would need to swap the TII motor in there and it run correctly. Or would it be cheaper and worth the money to buy a used turbo ecu.

 

You should never run a turbo engine with NA ECU and sensors. They're not meant to see boost, so when the turbo spools, you'll have almost no fuel/timing management to compensate. In other words, you'll just blow an engine by cutting corners. Click the link in my sig. to read up on how to properly swap in a TII engine.

 

O shiz you da best thanks