who doesn't like pictures?
I took jason's magic AFM equation and popped it into excel in something resembling a 3D map. and made.... a 3D graph:
Here's the raw equations up to 8k rpm and 200kPa MAP.
clearly you'll get an overvoltage on the ECU input for the AFM so ... Jason suggets capping the voltage at whatever the AFM reads at WOT in a stock vehicle.
lets assume for the sake of easy pictures, that number is 5.
Similarly, there's a minimum voltage that the ECU will want to see, so that needs to be measured too. I've got an OBDII scanner I can graph with so perhaps that's the magic bullet.
Or maybe it's "stick a voltmeter across the AFM pins"?
And here's what the 01 service manual says:
Ignition switch ON: 0.9—2.0 V
Idle: 1.7—2.4 V (after warmup)
Idle: 2.2 - 3.2 g/s (warm, 750-850 rpm)
2500 rpm: 6.5 - 8.5 g/s
I suspect I can plug in the OBDII and take readings at various engine speeds and then plug in the hydra and try to put in values that the ECU interprets as the same as if it were a real AFM.