Just to add - the engine driven fuel pump merely fetches fuel from the tanks and ensures that there is fuel sitting at the fuel metering device (carby, fuel injectors) ready to be sent to the cylinders by that device according to the amount requested by the throttle and mixture settings.
It's speed/amount of fuel being pumped is irrelevant in the scheme of things (as long as it is providing enough fuel to actual fuel metering device - it's it not well, then it's likely that things will get exciting quite soon!)
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