I'm seeing all my readings fluctuating 0.15-0.2V on the virtual brain and on my gauges. It usually takes a 15 or 20 average to stabilize my display. I'm using the FB 5V out in most cases for the power supply. What are you using to get stable out puts below 1V?
Tach is comming around. I had the input ground connected to chassis. FB analog input (-) was better, nothing was best. At the moment the Hz to V board is wearing a 220K ohm 1/4 watt. Something is still wrong with my calculated RPM, I'm going to fudge the numbers and reconcile it with my scanner.
Speedo still likes 140MPH. I'm getting @3V with the VSS input unhooked. 0.5-0.6V on that port with nothing hooked to it. Going to change ports, cables, converter next try.