[MethoD]

Yes, I have noted that in my testing. On mine it seems to sit at .55v when not flowing at all. Probably a slight difference in grounds at the Aquamist and ECU. At max flow it's hitting about 3.32v.

Can an actual flow rate be roughly calculated by the voltage output using a formula? So if
.5v = 0 flow
4.5v = 1000cc/min

and I want to solve for 3.32v (x)

first subtract the actual offset (.55v) from the known values, so

0 cc = -.05
1000cc = 3.95

use a simple formula:

x= 3.32 * (1000/3.95) = 840.5cc

Does that formula look right and does it give me a decent approximation of the actual flow?

I'm using the 0.9 and 1.0 jets and according to the flow matrix in the manual, at 20psi boost they'd be flowing about 797cc/min. I'm running about 17~18psi right now, thus my flow should be slightly higher. So 840cc/min seems pretty darn close to what it should actually be.