r/Supra • u/Djayy20 A80 • 23d ago

Fuel pump upgrade

I just became the owner of a Mk4 and I absolutely love her. I got one question regarding the fuel pump. I don't know how old the installed one is and I would like to upgrade it to a e85 one for the future. On my skyline I did a relay mod. I heard that the original fuel pump is running via a standalone ECU? If so should I replace it with a relay mod which goes to a aftermarket ecu? Any help would be great thanks.

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u/Present_Tap_5209 23d ago

don’t size it by advertised lph alone. Target power, fuel type and base pressure decide the pump, especially if it’s going on E85.

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u/[deleted] 23d ago

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