lambda replacement - Toyota Caldina, 2.0 L, 1998

On occasion, I got a boo lambda from a similar engine, not running around the Russian Federation, therefore it did not smell our gasoline.
bought a car in August last year and the flow rate even in the summer was at least 13-14 liters. on the highway somehow kept within 10.5.
in principle, I resigned myself :) the all-wheel drive is not the easiest car anyhow :)
after replacing, to put it mildly, I was surprised :))
now I drive 300 km for 20 liters in city mode :)
joy, as they say, there is no limit :))) writing boiling water with happiness :))