Originally Posted by nova939
what exactly does it make the car do cause i think that my car has the fuel pump bad or something but im not sure. It drives really slow and ill stomp it u can hear it loud as hell but its accelerating really slow. let me know if that what the pump does because i just dont want to replace the fuel pump if its not the problem.
The usual high pitched whine of an upgraded pump will be replaced with an intermittant lower whine that sometimes breaks up.
Another good point that I should mention: don't run your tank dry before refueling with an upgraded fuel pump. The pumps make more heat due to their increased capacity and the gasoline is basically a heat exchanger. If the pump is un-immersed more than it is actually immersed, expect less pump life as well.