economy of fuel

[m_abdi]

hello all agian.

i mean is this possible or need to chenge fuel economy for 1227730 ecu?

i read somewhere that some car that have oxygen sensor , they adjust fuel economy by this o2 sensor.
but 1227730 on oldsmobile cutlass ciera 3.1L and chevelet ceilberithy 2.8L have no o2 sensor and no petansiometer for adjust fuel economy.

now, is this possible to improve fuel economy in this ecm?

thanks alot