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Discussion Starter #1
I need to know if installing a higher flow fuel pump will make my car run rich or richer than stock?
 

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I am only installing the pump no injectors or fuel rail.
 

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I would like to know the answer to this also. My fuel pump is going out and I would just as soon replace it with a high flow. Will this cause any problems with the rest of the fuel system being stock??
 

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A higher flow fuel pump will not make your car run richer or leaner as fuel pressure is regulated by the ECU which controls the fuel pump.
 

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i should be getting my new pump today, but a new pump will give you more flow when gas is being pulled out. usually the fatremarket pumps biggest selling point is running cooler.

injector size determines if there is more gas dumped into the engine. so if you have bigger injectors, it helps to have a bigger pump
 
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