I installed it last week.
Could not get it to seal inside the 3/8" coupling.
I took it apart several times and tried various sealing compounds. None of which worked. There would always be slight weepage and fuel smell.
When it was working, the gauge reading was all over the place.....52...56...61...54...changing every fraction of a second and very hard to read.
I was amazed at how high the pressure rose above 60 psi under boost. I even saw 75 psi once.
At least I now know that the pressure does not drop under full throttle upshifts.
I removed it and re-installed the underhood gauge.
At least it reads steady and can be used to adjust the regulator.