[crashley]

Has the rv 12 only got one fuel flow unit and if so how accurate is it as the floscan sight says that for 912 engines you also need a unit in the return line

 

[Geico266]

There is only one fuel scan meeter.. The "K" factor is adjustable so you take into account the fuel being returned through the return line. Once you get it "dialed in" it is very accurate, down to 1/2 gallon per tank full with consistant and repeatable readings.