CNG MAP Sensor: This sensor measures the pressure within the intake manifold of a vehicle that operates on compressed natural gas. The pressure within the intake manifold affects the air-fuel mixture delivered to the engine. The MAP sensor sends this information to the engine control unit (ECU), which adjusts the fuel injection accordingly to optimize engine performance and fuel efficiency. It plays a crucial role in maintaining the proper air-fuel ratio, ensuring smooth engine operation and emissions control. LPG MAP Sensor: Similar to the CNG MAP sensor, the LPG MAP sensor measures the pressure within the intake manifold, but for vehicles running on liquefied petroleum gas (LPG) instead. LPG is another alternative fuel used in some vehicles, particularly in regions where it's more readily available or cost-effective. The LPG MAP sensor functions in the same way as the CNG MAP sensor, providing pressure data to the ECU for precise fuel delivery control. In summary, both CNG and LPG MAP sensors are crucial components in alternative fuel vehicles, helping to optimize fuel delivery and engine performance by monitoring intake manifold pressure and providing feedback to the engine control system.