Fuel efficiency is one of the important indexes to measure automobile performance. Proper tire pressure can significantly reduce rolling resistance, thereby improving fuel efficiency. The MAF Air Flow sensor helps the engine control unit (ECU) calculate the amount of fuel injection by accurately measuring the flow of air into the engine.By the MAF Air Flow sensor, the engine can achieve the good air-fuel ratio under various working conditions, improve fuel combustion efficiency, and reduce unnecessary fuel consumption. This means that not only can we save money on fuel, but we can also reduce our environmental impact.