Fuel flow is porportional to the Duty Cycle of the injector signal. A
volt
meter across across an injector will give you uncalibrated fuel flow,
Assuming the time delay to open is = to the closing delay and the waveform
is square. Web search indicates typical wave form is sq. with a 70v
inductive kick. Current rise time ~1.5ms so I guess the on time is long
resulting in a positive offset. Anyone know how = the times are? The
injectors take .6A so I'd start with a 470 ohm R and a zener or LM431 to
filter battery changes. For relative calibration: connect across battery
=
100%. Good enough for my needs: check effect of tire change, syn oil, wax
job, etc..

Check http://www.robietherobot.com/storm/f...ectorguide.htm for
injector
flow rates and discussion of on/off delay..



Look up Megasquirt, it's a DIY fuel injection system and related sites have
all the information you could want about injector pulsewidths.