Hello all. My 2001 Monte SS has an adjustable fuel pressure regulator and I was wondering if they came stock as it is stock appearing. There is a small tamper-proof torx fitting on the top of it. I just dont see anything about this come up in my search results. What is our fuel pressure supposed to be at stock..I think it was 52 psi with the vacuum line removed...42 with it on but I just want to make sure that is correct. Also...what is your average mpg on your overhead displays? Thanks in advance!