MSefi.com read only forum (Jan.15,2018)

I was wondering, does anyone have the derivations of the equations used in Megasquirt, such as the AIRDEN equation and the REQ_FUEL equation? I would be very interested in knowing more about these equations. Thanks in advance.

Ah, alright, thank you guys for your help.

Ah, alright. The page said nothing about degrees Rankine, I actually have never heard of it until I looked at that wikipedia page.

When I plug in the same information, in its respective units, into both the standard version and the metric version of this AIRDEN equation, should I not get the same ...

In the "How Megasquirt Works" section of http://www.megasquirt.info, the given AIRDEN equation is as follows:

AIRDEN(MAP, temp) = (0.0391568* (MAP*10-31.0)) / ((temp+459.7) * 1728)

and below the equation is the explanation of the equation, where it states:

459.7 is used to convert from Fahrenheit ...