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That's not strictly true. A quiet fuel pump is not necessarily a happy fuel pump.
We test them using a piece of equipment that measures the performance of it whilst the car is running. We can see the rotation's of the motor in fine detail. This will certainly pick out a pump that is below efficiency.
A standard S2 pump will be fine for 200bhp, but my advice is to replace it with a new one if the car still has the original one fitted.