[Mac Daddy]

Thanks for your response, Because the sensors and ecu are different in Japan, I was told to use the harness and ecu from my 1.6 and that it would run fine. I did make one change, I took the crank position sensor from the 1.6 and put it on the 1.3 in order to keep from having to rump the pins for this sensor in the ecu.
The engine runs well and I can't even tell a difference in the power between the two engines.
I'm not sure if the 1.3 throttle body will work on the intake manifold of the 1.6,
I was told I had to use the 1.6 manifold because of US polution sensors, there seems to be some difference between the two bases although either one will fit on the 1.6 manifold.
I'm wondering if the winter gas formula would make a lot of difference, I always notice a difference in the winter mpg but not that much, I normally get 35 to 37 mpg not 28.
What if I try higher octane gas?

Mac