Quote:
Originally Posted by phunk
The factory fuel pressure regulator in your 370z attempts to maintain 52psi in the fuel system at all times.
If you increase the engines fuel consumption to 100lph, the regulator will start to relieve 200lph from the fuel system to maintain 52psi.
So to answer your question: larger pumps can and do push more fuel than stock. But it does not effect your fuel economy because all the extra fuel just gets dumped out by the regulator.
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Quick question: If you increase the pump volume and retain the stock fuel pressure, won't that just heat up the fuel faster, since more volume is being pumped over and over, verses being burned in the engine?