If it feels and runs the same while driving then I'd go with it. All it does is absorb fuel pulsing that might be felt through the hard lines. Many go with a plain hose, especially if they run biodiesel since as far as I know nobody makes one that's officially compatible.

If you search long enough you'll read doom-and-gloom stories about it, stories about how it was for "dainty" Americans who didn't like vibrations (ever ridden in an American car of the time? Ha!), that it controls the idle, whatever. Haven't heard anyone say it made much difference without it.

-Rog