allright i'm hooking up all my nitrous lines etc. and i am told to use teflon paste. My question is do i use it on every thing i'm screweing in, like the fuel line to the test port, do i paste that line into the port? or the nos line going to the bottle? do i paste that one on the bottle? or are some of them okay w/o being pasted. Also do i paste the blow down tube on?

for my fuel system, i put teflon paste/tape around every single screw in component that required any type of seal. i'd be willing to bet that it's the same for nitrous oxide systems too.

The paste acts like a rubber washer to stop leaks. I would think you would put it on anything that you would rather not leak. ;-)