Electrical Speed density to mass air

Is there a reason why you want to swap to mass air,or just because?
 
Good question. Partly just because, partly from what I've read there is improved throttle response, and ends itself better to mods/upgrades. Some upgrades which might be done later.
 
Reactions: 1 user
Back to my questions, which after doing a bit more research.... If I buy a BBK or other off the shelf intake, it will fit 'cause it's made to fit. So that leave me with matching a used MAF to the 19lb injectors. What donor car should I look for? Anything that I should be aware of, what to look for etc?
 
Grab a 94-95 Mustang MAF, and an adapter. Will work with the 19# injectors, and with the adapter will fit the stock intake tube.

I used when I when I converted my '88 to MAF. Car runs (or ran) beautifully with that MAF and the A9L.
 
 
The physical difference is mass air has a meter in the air stream between the filter and the throttle body, speed density does not, now for the working difference in laymans terms, mass air, along with the bap sensor, measures in coming air as one of the parameters the computer uses to adjust a bunch of stuff like fuel, timing ect, when you are driving around, speed density uses a map (manifold absolute pressure) sensor hooked to the intake manifold by a vacuum line as one of the parameters to adjust fuel, timing ect.
 
Speed Density = Fuel trim is calculated based on manifold air pressure while engine runs. When engine is being started, a reading is taken to set a base point for atmospheric pressure. Some calculations later, the ECU can guess the volumn of air entering the engine.

Mass Air = Fuel trim is measured directly using a mass air meter and calculated against barometric pressure. Much more accurate.
 
mass air is much more accurate (true) or my explanation was less accurate (also true)?