I have just installed an HFS-3 kit in my '97 M3. I'm having an issue with the flow bar graph showing full flow with the car idling, no flow is actually happening. When I unplug the yellow cable the bar graph shuts off. I have tried plugging in another new yellow cable away from any other wires and it does the same thing do I believe it is not an induce noise issue.
I had all cables connected and here is a picture of the board with jumper configuration....
Any help with this would be appreciated.