This is topic another question from the newb in forum Tech Talk at Northern California Ford Owners  .


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Posted by 87Saleen (Member # 1549) on :
 
k, mass air and speed density. wtfg is the difference?
 
Posted by 5project stang0 (Member # 2082) on :
 
post that under tech talk bro...ull get more replys
 
Posted by 87Saleen (Member # 1549) on :
 
lol, duh huh? what was i thinking
 
Posted by 5project stang0 (Member # 2082) on :
 
Mass Air flow uses the amount of incoming air to regulate how much fuel the engine needs. Speed density uses the manifold air pressure, then looks in the computer for the amount of fuel to use. The MAF system doesn't rely on a set of fixed parameters in the computer like the speed density does. If you have more airflow than the highest parameter in a speed density setup, the computer doesn't know how to react. Therefore the engine runs like crap in a worst case scenario.
Mass air will adapt to changes made to the engine better. This means it
will milk more power out of every modification.
[burnout]
 
Posted by WIKD 281 (Member # 40) on :
 
Good question! Im gonna move this over to the tech talk> looks like you have a reply right there ^

Thanks.
 
Posted by st5150 (Member # 51) on :
 
Short answer...

Mass Air - The computer uses a sensor to measure the MASS of the AIR to measure the the amount of air coming into the engine.

Speed Density - The comptuer uses a sensor to measure the pressure of the air in the intake manifold to measure the the amount of air coming into the engine.
 




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