In response to an inquiry about trying to flowbench test a MAF housing with an active MAF sensor, one that gives the voltage output equivalent to what would be read on the car, I picked up a power converter for supplying a 5v signal to the MAF sensor.

That part is now in place and wired up and supplying the desired 5 volts.  Next it looks like I’ll need to do something to address the 12v that is supplied in conjunction with the ignition system.