Throttle Body Cfm
MAF (g/sec) * 1.642 = CFM
*Only use this one for WOT. If you need it for something otherwise, say so and I'll crank out another one (much bigger).
If you want to use your RPM to calculate CFM it gets much more complicated. You have to know alot of other flow criteria about the engine (volumetric efficiency to be exact). The simplest method is to just convert your MAF reading.
Good Luck





