If you have a brushed pump, it will only be possible to run a brushed pump. If you have brushless, it will only be possible to run brushless. They are totally different electric motor types and are not interchangeable.

That being said, it is possible to use a different brushless pump. But it needs to be 4 wires. Otherwise to use brushed in place of brushless, you'll have to devise your own electrical conversion and use an aftermarket ECU. A brushless motor can't plug and play replace a brushed motor.

Thee are additional considerations I'm not going over like how much current can the factory ECU provide, how much fuel can the factory pump body flow, will it cavitate, etc. I would strongly advise trying something someone else already had success with unless you really want to get into an engineering project.

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