Hello folks, I just got myself an old Micra K11 (Automatic, 5 door) that had the engine swapped from a CG10 to a CG13 and my fuel economy is terrible. Admittedly mostly city driving, but it is doing worse than my 2.5L BMW at much lower average speeds!
I have searched extensively and many suggested swapping the O2 sensor, but I'm worried there may be a real systematic issue, such as an incompatible ECU -- I read that the CG13 ECU had less advanced timing at the top end.
I do not have much automotive/mechanical experience. How should I go about troubleshooting? I have no idea if I have the CG10 or CG13 gearbox either.
Any help/advise would be greatly appreciated.
I have searched extensively and many suggested swapping the O2 sensor, but I'm worried there may be a real systematic issue, such as an incompatible ECU -- I read that the CG13 ECU had less advanced timing at the top end.
I do not have much automotive/mechanical experience. How should I go about troubleshooting? I have no idea if I have the CG10 or CG13 gearbox either.
Any help/advise would be greatly appreciated.
