just swapped a 98 jdm itr motor in my 93 hatch using the ecu that came with it so it shouldn't be looking for CKF should it? It doesn't even have a sensor on the motor could it possibly be something else ? I haven't actually drove the car yet still need a test pipe or cat and a alignment so I don't know if it's in limp mode just started it up and that's the only Cel I'm getting . The ecu number is : 37820-p73-023

 

Ckp correction , sorry