What is the difference between a map and a MAF sensor?
What is the difference between a map and a MAF sensor? First lets clarify some basics. MAP = Manifold Absolute Pressure. A MAP sensor measures the pressure in your intake manifold. MAF = Mass Air Flow. A MAF sensor measures the amount of air coming in to your engine. How does a MAF sensor communicate with the ECU? There are 2 types of each of these sensors. The most common is what I'll call a "voltage type" MAP or MAF. The voltage type communicates to the ECU by giving it a voltage, and this voltage tells the ECU what the...