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docs: create configuration/Fuel_pump
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---
title: Fuel pump
description: Setting the on/off conditions of the fuel pump
published: true
docs: update configuration/Fuel_pump
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date: 2020-01-16T14:17:07.764Z
docs: create configuration/Fuel_pump
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tags: aux outputs, tuning
---
docs: update configuration/Fuel_pump
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# Fuel pump
Fuel pump control is a simple but important function performed by the ECU. Currently Speeduino does not perform variable (PWM) pump control, but
docs: create configuration/Fuel_pump
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## Settings
docs: update configuration/Fuel_pump
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![fuel_pump.png](/img/accessories/fuel_pump.png){.align-center width=480}
docs: create configuration/Fuel_pump
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* **Fuel pump pin** - The Arduino pin that the fuel pump output is on. In most cases this should be left to `Board Default` unless you have a specific reason to change this.
* **Prime duration** - How long (In seconds) the fuel pump should run when the system is first powered up. Note that this is triggered **when the ECU is powered on**, which will not always be the same as when the ignition is turned out. If you have a USB cable connected then the ECU is already powered up.