Hard wire for upgraded fuel pump?

[Sair]

Hi i am on silvia s15 and i am trying to upgrade fuel pump to aem 320 lph. Do i need to hardwire with 12 guage wire and place a separate 30 amp relay .? I had searched internet there are s14 or s13 but s14 and s15 are almost same in mechanical works.. but what haunt me that do s15 need hard wiring and relay or just place the fuel pump with the oem wire and relay that is beside the foot pedals.


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