BigRigTech
Diesel junky
Hijack away good buddy....It's all things I like to learn about before I do them.
Keep this in mind then, I've been to 3 auto parts stores & 2 radio shacks & have yet to come up with stainless steel washers or a fuel pressure gauge that will work!!! I let ya know where I find the stuff.
With the stage 1 injectors I would skip the FPR shim and just get a regulated return set up from ITP... A bit more money but worth it in the long run... Comes with a gauge too!
Does that bring the pressure up? I've seen them advertized but don't know what they do other than get more fuel to the #8 injector.
Your might be confusing the HPX mod with the Regulated return kit. Two completely different mods. But with the regulated return kit you dont need to do the HPX mod.
Cornfuzed yet?
The regulated return kit stops the dead headed fuel rail and puts a return line from the head(s) to the tank with a regulator on it. This is a very basic description of how it works, read up on ITPs site (link provided) on their technical description and added benefits of the mod.