[quote=ERuff;507203]
Quote:
Originally Posted by
jag767
the diameters of the tube and the raise at which air passes the sensor are totally independent of each other.
The rate or velocity of the air anywhere in the inlet pipe is completely dependant on the diameter of the tube regardless of where you measure the velocity in the tube. The velocity of the air in a 2.5" diameter tube has to be greater than the velocity of the same mass of air passing through a 2.875" diameter tube.
If you are using a hot wire MAF sensor the single is a function of the velocity of the air passing over the sensor. If the velocity is greater than originally designed for you ECU is being told by the MAF that more air is being drawn into the engine than there actually is. Can't be good, it's got to screw up the ECU's logic to some degree.
Shabby your right there is a 25% difference in tube area but the areas are 4.9 vs 6.5 sq. inches.
i disagree. if you take a straw thats 1 inch in diameter and another hose thats 1.25 inches with half the opening restricted naturally it will not have the flow of the smaller straw even though it is larger.