need cheap gas pressure guage
I am installing fuel injection. It requires that I install a fuel pressure guage on both the return line and the feed line to tune the system. I've been to napa, auto zone, etc., no one has a fuel pressure guage except auto zone--but it cost $40 and is a huge looking contracption. I was just hoping to find a small guage I could hook in-line and leave it for future trouble shooting. The auto zone one could not be left there. I also was hoping to not spend $40 for just one guage. Any tips???