Quote:
Originally Posted by SouthArk370Z
+1. The MAF measures, as its name implies, mass flow, not velocity or volume. As long as you are within the operating range of the sensor, pressure and velocity at the sensor are not important. If you increase the system pressure (eg, ram air) the velocity will actually decrease to get the same mass of air into the engine (the air is more dense so it takes less volume to get the same mass).
Sensor location can make a difference due to turbulence.
The setup in the OP is not a ram air but an "enhanced" CAI. For it to be a true ram air, it would have to have the filters enclosed and sealed within the new duct work.
|
Actually it will measure velocity, volume and flow of air in a way. A turbo'd car will max out MAF sensors if they are installed in to small of a diameter tube. To small, the volume of space isn't enough and the volts increase maxing out the sensor and tuning cannot be completed or compensate for the change above 5.0v. The velocity of the air filling up a small tube to fast again will max out the sensor and tuning will hault. Yes in the end its still mass flow but factors effect flow.
Density has nothing to do with ram air. It has to do with heat. Hotter air is less desnse. Ram air at ambient temp is still the same temp as ambient air in a closed space as long as heat soak is kept at bay. The amount of air molicules entering the engine will be the same. However a ram air will cause the senser to increase fuel which is we're the bogging and hesitation come from since wind is never going to be the same driving down the road, for example a semi blowing past you rocking your car.