I’m installing my fuel system and I’m trying to figure out the boost reference for the fuel pressure regulator. The instructions with the system says it should be boost only and on a Paxton car to use the line by the throttle body. This happens to be the same line going to my blow off valve. I also have my Boost gauge hooked up to the same line. Am I wrong or is that hose boost and vacuum? My boost gauge shows vacuum, so I would assume hooking my fuel pressure regulator to the same line would be incorrect.