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Racing applications will have all pumps running all the time. This is done for street applications so that heat is not built up in the tank due to continuous running of the pumps when higher volume is not needed under normal driving conditions. Fore innovations standardly (according to them at the time) uses 2psi to activate the additional pumps.
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Pumps two and three are triggered via your "HOBBS" switch AKA pressure switch. This signal is what tells your Fore Innovations module to turn pump one on at "key on". And yes the FPDM was completely bypassed. In our setup, the "remote wire" is the wire coming from the fuel pump relay via inertia switch to energize the pump (as memory serves) via the FPDM in a stock setup. We did not use the fore innovation box you have but rather sourced relays. Did a twin setup like this for a friend runnign Fore innovations stuff.
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