Different WIF light questions

chpprguy

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I have a random WIF light that only pops up when cruising
The truck loses a little power, but as soon as I let off the accelerator pedal, it clears and normal power returns.

This is strange to me because the stock hfcm is gone
I'm running two 7.3 style bosch pumps in parallel with a WIX water separator before the pumps and a WIX fuel filter after the pumps. The fuel heater and water in fuel sensor connections are unplugged.

Any thoughts?

2004 6.0, ZF-6, 4x4 crewcab
 

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