they restrict the amount of air and fuel going into the engine
On a vehicle it is a Mass AirFlow sensor. It measures the amount of air going into the engine.
The pupil controls the amount of light that enters the eye.
Without you doing other 'upgrades' at the same time it'll add 0hp. All the Mass Air Flow meter does is gauge the amount of air going into the engine and the ecu then takes that information and adds the correct amount of fuel for the amount of air going into the engine.
the engine will seem to cut out or run really rough
look under the throttle body on the front of the engine there s a sensor with 3 wires going to it that is the engine coolant temperature sensor
the lambda sensor regulates the air and fuel mixture going into the engine. if the sensor is not accurate then the outcome is a loss in engine performance and worse gas mileage (less economical).
The name of the device that regulates the amount of fuel going into the engine of a personal watercraft is the throttle.
It is on the engine, under the intake manifold, there should be a wire going to a sensor there. It is right in the middle.
The "Check Engine" light will illuminate when the ECM (engine control module) receives a signal from a sensor that is out of its parameter. It could be a faulty sensor or the sensor may be doing its job reporting a problem to the ECM.
sensor for water temp is in water pump on front of engine, has two wire plug going to it.
looks like a sensor or thermostat going into engine block