OEM knock sensor with Link G4+
I have a 1991 mr2 turbo with Link G4+. I bought the car with this ecu already installed. I've hooked up a laptop, but from what I can tell knock detection is turned off. Does the link ecu I have use the OEM knock sensor? Can it be calibrated? When I attempted to enable knock detection, it has option for knock internal and another option. It states not all link ECU have the internal knock. How would I know if it does or doesn't?
Currently, I'm rebuilding the engine, so I cant actually connect to link and set anything up, but I'm just trying to get some information from anyone who knows. Thank you.