The noise (if it's the high pressure pump under the passenger rear door area) could be a symptom on an issue with the in tank lift/supply pump, or a fitting issue (They're normally isolated by rubber to limit the noise)
If everything is ok and it's just the normal noise thats annoying you, ideally you would change to one hi pressure in-tank pump like the later 940 setup, but the stock system is generally not excessively noisy, eg: you shouldn't really hear it in the cabin while driving.
The stock fuel system has an In tank hi flow/low pressure lift pump that supplies lots of fuel to the high pressure EFI pump that is capable of supplying the correct fuel pressure for EFI system.