So the adapter with fuel pressure gauge that I had ordered over a week ago finally came in
But....

When I opened the package the instructions say this adapter screws between the fuel filter and the the line coming from the tank
Are the threads the same to the ones on the throttle body so that I can visually see the fuel pressure while driving to test and tune my fuel injector data?
Otherwise I'll have to have my gf ride in the back holding the gauge but i doubt she is very fond of the idea.fuel pressure.jpg