i was about to say that, i had the same kit you have (got it from chad too) and it took me a second to figure that out too, make sure you put that metal plug into it with red locktite, nitrous likes to find its way past fittings without locktite..............

if you have any more questions about that kit and chad cant help ya IM me (evan50150) or PM me on here with your questions, that kit works real well once you get it set up right