Just a heads up for those of you in California (and maybe other states) when it comes to smog inspections. When you remove the vacuum hose to the fuel pressure regulator and plug off the connections, your vehicle is no longer compliant because it's been modified from the way it came from the factory - regardless of whether or not the mod has affected emissions. I failed visual inspection today because of this. However the guy I went to was quite nice when I explained what it was all about. He let me go next door to an auto parts store and grab 6" of 4mm tubing. I re-installed the vacuum control to the FPR, passed inspection, drove down the street for lunch, and then removed the hose and put back the plugs on the end of the vacuum lines. I'm just going to keep the hose in the center console from now on and reinstall it prior to an inspection.
I'm told it's possible to go to a special California Bureau of Automotive Repair "Referee Station" and have them exempt the FPR modification and then install a tamper-proof label saying that this mod is OK, if I can convince the the inspector that the modification will not adversely affect emissions. I may look into this in the future, but for now I'm busy with other projects.
