oh ya, another think i found people using a few diffrent formulas to find out what a specific engines air flow requierments are. Which one is the most acurat? Im just playing around with maps so im using the simpelist one
CFM = (L x RPM x VE x Pr)/5660
then to find lbs/min just mult my about .06....
was acurate when i maped out on the t25 compressor map for 10psi wich is what im running now.
However there is also this way:
First to calculate EVF use the following equation:
EVF=(engineCID/1728)*(rpm/2)
then we’ll use EVF to calculate the amount of air in lb/min the engine is flowing under boost and at temperature using this equation:
N=(P*EVF*29)/(10.73*T)
Where N is the airflow in lb/min, P is the absolute pressure in psi, and T is the absolute ambient temperature in Rankin.
then take n and multiply it by the VE on your engine.
If there is a better way let me know.