Just a little note to let anyone who is trying to get their boost gauge to read off of the fuel pressure regulator port on intake manifold. I tried for 2 hours to get my gauge to rear boost/vacuum and no luck. After a lot of poking around I found port was clogged with some sort of sealer and had to be pulled out. Everything works fine after debris was cleared out. My car only has 1100 miles on it and the dealer told me it must be a bad boost gauge. Hope this helps someone in the future. These gauges are the ones that are next to the tach. Good Luck