Cadillac srx washes the throttle. Why is the fuel consumption high?

It turned out that the throttle valve could not be closed normally because of too much carbon deposition. After removing the carbon deposit on the throttle, the air intake has changed, but the engine computer is still controlling the fuel injection according to the original data, resulting in high fuel consumption. You can run for a while, let the engine store new records, and the fuel consumption will be reduced.