I need to run a fuel line for a wet system I have a holly fuel pressure gauge which comes with a three way tee, I was just thinking I could run the fuel line from the open hole, but 88crx91integra told me it would pull fuel from the 3rd and 4th injector since thats where the fuel line would be for the nitrous

 

are you asking us where to get a fuel source from for your n2o kit? If so, you need to install a tee in the line from the filter to the rail.