and that makes sense, unless the non turbo dont have a cold start feature (unlikely) they still read from the radiator...
awesome work and not knocking it, just trying to identify something that will cause your car to not run right if the cold start sensor isnt getting a reading then the car will always be in cold start "mode"
check your std radiator, there should be a std bung in it that is connected to the ecu, granted you require the additional one to control the thermo fans.