A few of you have seen my other posts and questions and some have been very helpful as I perform a K20 swap in a Fiat X1/9. Thank you for the continued help.

I am about to start plumbing the fuel system and have been noodling for a while the fact that the fuel rail has ONE fitting for a fuel hose. Regardless of what I am working on, I am used to any common rail system having TWO hose fittings--supply and return/flange for FPR. What is going on here? Did Honda have some system in which a regulator worked to bleed excess pressure BEFORE the fuel reaches the rail? Did the ECU cycle the fuel pump according to pressure need? I am guessing the former, but the latter is possible.

Thanks ever so,
Jonathan

 

Otter be an easy question to answer.

 

the FPR is built right into the pump. So as it is holding a single level pressure it circulates back there

 

It's common for people with higher horsepower setups to make a return line from the fuel rail.

Also, I hope you post your build project here:
http://www.k20a.org/forum/forumdisplay.php?f=122

They would love to see it. As would I.