I'm looking for a new fuel pressure gauge on my boosted D16. I have the edelbrock kit so that means I have 8 injectors and 2 fuel rails. I have a walbro 225 fuel pump so I know I'm running a high psi. I wanna bring my fuel pressure down around stock. Now my question is, say I get an AEM fpr. That'll be mounted on the factory fuel rail. So the factory rail injectors and going to be at a regulated fuel pressure. What about the secondary ones? They're still going to be seeing the higher fuel pressure right? What can I do to regulate all 8 injectors? Any suggestions would be helpful. Thanx

 

How is the second rail fed?
Is it ran in series or is the fuel feed split and then goes to each rail?

 

Its in series....any adjustable FPR will regulate the pressure on the whole system.