have been driving a 94 and 96 nissan sentra for several years. THE
96 CONSISTENTLY AVERAGES OVER 4 MPG GREATER THAT THE 94.both are stock cars, 4 door, 1.6 liter engines, 4 speed/overdrive auto transmissions, have same brand & size tires and use the same tire pressures, which are adjusted monthly. both cars have almost identical total mileage. no dragging brakes.
the 96 has a different shaped body and is presumably more aerodynamically efficient. however, both autos are driven in the same city & highway mileage conditions. the 96 gets better mileage in city driving, than does the
is there some sensor, that DOES NOT set a computer code, that can cause the computer to run the 94 engine richer than the 96 engine?