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How To Install Aftermarket Fuel Rail

darrinspencer
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darrinspencer Grand Master

darrinspencer

Posted
Posted

I have a Neo rb25 and have just fitted a greddy style inlet plenum and have a new set of 650cc siemens top mount injectors. The injectors came with a new HKS style fuel rail.

To use this rail I will have to fit a new remote fuel regulator.

The question I have is, the Neo rail appears to have 2 regulators on it. Is this correct?

They both have a vacuum line from the old inlet plenum.

Do I need to have 2?

Can I just run a line from the fuel filter to the end of the new rail and then run a return line form the rail, thru the regulator and back to the tank?

PM-R33 Grand Master

PM-R33

Posted
Posted (edited)

Can't exactly remember what a Neo fuel rail looks like but the setup should go as follows:

-Fuel filter

-Fuel line from fuel filter to inlet of fuel rail

-Fuel line from outlet of fuel rail to your aftermarket fuel pressure regulator

-Fuel line from aftermarket fuel pressure regulator to secondary factory fuel pressure regulator (Not sure what this is actually called, its the regulator that drops the fuel pressure back down)

That's basically it I believe.

Edited by PM-R33

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