generally speaking on turbo cars with n20 you get more then the shot you get example 100 shot might outcome to 115 or 120hp gain on the dyno.

you want a direct port system.

id just run it a little rich when you juice it len ayalas car runs the bottle(100shot nx kit i think) with 28psi ona 20g.

You can have it cheap, fast or good. Pick any two.

If you want it cheap and fast, it's not going to be good.
If you want it cheap and good, it's not going to be fast.
If you want it good and fast, it's not going to be cheap.