I would suggest going to the OBDI ecu, but adding the CKF sensor is also possible and fairly easy.


ECU: Super easy... like... braindead monkey easy. But expensive.

CKF sensor: Cheap for parts, but time consuming labor wise.





I would do the ECU in the blink of an eye. In addition to resolving the CKF issue, the car will run better with proper fueling for its camshafts, intake manifold, and displacement.

Right now your car is most likely running at about 8/10ths because the GSR ECU is programmed to run the dual butterfly intake manifold.


WARNING: I do not know the emissions rules in your area. It is entirely possible that the car will not pass emissions with an OBDI ECU. In addition, it's possible that the car will not pass emissions at all because it is equipped with an engine older than the year of the car's production.