Rewiring of Fuel Pump for ROM Tune(Enthalpy)?

[Backfire]

The car is a 1990 240sx XE with Redtop SR.The prep for my car to up the boost is almost done. Larger injectors, z32 maf sensor and intake kit. I'm running the stock 7lbs right now. All I have to do is send my ECU out to Enthalpy. He told me before using his ECU that I would have to modifiy my fuel pump? Something with the wiring. I've been searching a few days on here and zilvia and haven't found a strait answer. What do I need to do? I already have a walbro 255 fuel pump in. Is it something with getting more volts?

Thanks, Cody