multiple tbi pressure regulation

Hi, I have a three carb manifold to which I have adapted three GM tbi bodies. What is the best way to regulate pressure? Just attempt to adjust all three for about the same pressure, or install a separate pressure regulator in the return to tank line?
Thanks
Abe

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Originally Posted by trades707

Hi, I have a three carb manifold to which I have adapted three GM tbi bodies. What is the best way to regulate pressure? Just attempt to adjust all three for about the same pressure, or install a separate pressure regulator in the return to tank line?
Thanks
Abe

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When I setup a dual TBI I made block off plates and used an Aeromotive regulator on the return side. I plumbed them in parallel.

:ttwwop:

I believe Fast355 has the winner.

I would expect that the pressure regulator with the lowest pressure setting would dominate and control the fuel pressure of all 3 TBI units if your simply paralleled the inlet and outlet lines from all 3 TBI's.