Here is the stock GSR fuel pressure regulator and the B&M CommandFlo Fuel Pressure Regulator Kit.
Installation of this kit requires that you cut the top off of the stock regulator as shown in the picture before the anodized cap, and adjustment bolt can be installed.
Due to the fact that I am running RC 310cc injectors, I am unable to run stock fuel pressures at idle. Even with the help of the B&M, I was still unable to lower fuel pressures to a reasonable level for my injectors. This required me to drill a small hole in the fuel return line to bleed off some of this pressure.
It is also important that this hole be drilled at the proper angle. Here is a side view of this drill bit in the hole to illustrate the angle of the hole.
Here is the modified regulator bolted in place on the fuel rail.
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