midnightmoonlight Posted June 10, 2008 Share Posted June 10, 2008 Can I move the stock fuel regulator on a L28 EFI NA to any place on the return line or should it be close to the injectors? Its in the way of my strut bar and I wanted to move it to the end of the fuel rail where it ties into the body fuel lines back to the tank. Quote Link to comment Share on other sites More sharing options...
zcarnut Posted June 10, 2008 Share Posted June 10, 2008 The important parameter about the placement of the fuel pressure regulator is to minimize the length of the vacuum line to the intake manifold. That’s why the factory mounted it on the intake manifold. This line is the analog “control signal” for the pressure regulator and the further it is away from the intake manifold the longer (in time) it takes for the regulator to respond. The newer vehicles today with the “returnless” EFI systems that do not monitor the intake manifold vacuum directly, will place the regulator directly at the output of the fuel pump (which means its located in the fuel tank). Quote Link to comment Share on other sites More sharing options...
jeffer949 Posted June 10, 2008 Share Posted June 10, 2008 mine is over 2 feet away from my injectors. you should be fine. Quote Link to comment Share on other sites More sharing options...
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