Fuel on Demand

[huzilulu]

Hi guys

I know some of you have used the FOD system to regulate the fuel pump to keep fuel cool, increase pump life, etc ... I have a few questions as I try to install mine:

1) I set it up as in the documentation, using a return style system setup - my target is to get 58psi to the rails. My issue is even after trying a few different settings, I am getting the pump to run at almost full speed: it's at 98 duty cycle and drawing 10A to maintain 58psi! I'm not sure what I'm doing wrong...
I tried FOD at 58, regulator at 60
FOD at 60, regulator at 58
Both at 58

All three give me fuel pump at almost full speed

2) the FOD shows a much different pressure than my fuel Guage that came with the regulator - almost a 10 psi difference... I'm not sure which one is incorrect so I need to get another Guage to verify - if the FOD pressure sender is bad, where can I get a replacement?

Others who run this system - what duty cycle / amp draw have you seen?

Thanks

[huzilulu]

That's a very helpful idea - thanks Mark..

How did you solve the body earthing issue? Or test for it?

[huzilulu]

Thanks guys.. I did check and there is no 'continuity ' between the pump body or negative terminal and chassis / ground points.. I did disconnect the wiring to test, so next I will look the FOD wiring to see if it may be grounding out somewhere, though I doubt it since the negative terminal goes to the FOD and not chassis ground..
Is there a way to test if the FOD controller is working correctly?